Man you are simply gifted in mechanical engineering. To look at this stuff, understand it, and then present it in such a clear manner. Really impressive
I appreciate that very much and I’m glad the video was helpful! I really wish I had the 3d models I use in the newer videos back when I started because I feel they would have really helped. Thanks again!
Wow this is way more education and in depth than i thought it would be…. And it is EXACTLY what i was looking for. This has made me confident in my purchase and really helped teach in depth in an understandable manner. Fantastic work
New to the channel. Loved this video. What would be useful to the Sig community, would be a sight number chart for each pistol that will let the owner convert Sig's infamous "combat hold" sight picture into a dead-on or a 6 o'clock sight picture used by the rest of the planet.
15:00 it seems clear that the striker now interacts with the base of the sear so that it can't be rotated laterally as easily, because the ventral face of the striker hits the dorsal face of the sear. Seems like a smart change to me
Wow, can I just say I “like” a video every now and then. As far as channels I am subscribe to, there are very few. Your channel has just been added to the list. In-depth and educational is an understatement. I had a lot of concerns about buying this pistol. The knowledge I easily acquired through your videos has put my mind at ease and secured my decision. Thank you.
Hey @Joshua Fratti! That’s very kind of you to say, I’m glad to have earned your sub! The goal of the channel has always been to inspire confidence through education, so people will be comfortable with their firearms and try new things. Of course, that’s much easier when you feel you understand your gun down to its core, so your exactly the type of subscriber I built Sig Mechanics for. Anyway, I’m glad to have you here! If you ever have any questions let me know you can always reach me at sigmechanics@gmail.com
15:15 A possible explanation as to why Sig reduced the sear's vertical ledge was to keep sear/striker engagement more consistent. Unlike hammer fired guns which have all relevant engagement surfaces fixed to the frame (and therefore fixed relative to each other), striker-fired guns have to account for the slop between slide and frame as well as the striker's play within its channel. So every time the slide moves forward and the striker touches the sear their engagement may be slightly different from the last. This is why when adjusting overtravel on a striker fired gun it is important to push the slide down towards the frame while testing to make sure there is enough travel to achieve break even when engagement between sear and striker are at their maximum. By getting the striker's leg to touch the base of the sear, Sig limits how far down the striker's leg can go, ensuring that the contact area between the striker's leg and the sear's ledge has less variation, in turn leading to a more consistent trigger pull shot-to-shot. At least, this is my (somewhat) educated guess. I just came across your channel. Your presentation, explanations, and attention to detail complete with measurements are fantastic! I do hope that you consider covering aftermarket trigger parts like those from Grayguns and Apex and show how they differ from OEM. In any case, keep up the great work!
Nice video! and folks, that is why the updated version of the p320 and the new p320s are not going to go off in your holster by accident. That trigger has to move for that gun to go off, and the video is very professionally done. Thank you
I have done a very thorough mockup of the P320 with the update from now years back and the newer x5 and p320 legions, etc. And there is no possible way the gun will go off without pulling the trigger.
I should also point out that in his video he stated that the reset spring was broken and Sig, claimed that was the failure. In reality, Sig, had already discontinued the use of that part because they considered the striker reset spring redundant. Therefore, that claim does not hold any weight, and the reality of the situation is most likely that the trigger was pulled inadvertently.
@@w00borg34i mean he was in middle of competition and reholstering, not crazy to think his shirt or finger could have engaged the trigger when reholstering. mind you i stopped carrying my 320 after that video but still, could have easily had finger or something in trigger. trying to be fast hes in competition adrenaline running and reholstering
Seriously. There are a bunch of mechanically ignorant scairdy cats out there. As I have posted in every P320 video... *I WILL BUY YOUR DANGEROUS P320! ALL OF THEM! NO LIMIT!*
@@m4rvinmartian I got an axg legion I’ve been second guessing 😅 (only because I bought it, watched some cool videos on it and THEN started seeing all the AC incidents. Like why RUclips did that to me I’ll never know 🤷♂️)
@bobdylan7432 Don’t let RUclips get you worried. Unfortunately, doom and gloom gets more clicks and therefore lots of channels push that narrative. I have quite a few videos that will help give you piece of mind, all backed by on-screen testing and data. You have an amazing gun! Enjoy it!!
@@SIGMECHANICS very true, easier for people who have ND’s to hop on the bandwagon of a few bad incidents and actually deflect the responsibility and embarrassment. Thank you for your videos, they articulate the function and mechanics of the 320 spectacularly and I(among many others) appreciate the time and effort put into them.
@@m4rvinmartian Just happened to a police officer in a town near me. Gun fired when he set the holster down on a table. He must have been mechanically ignorant.
It's crazy I thought it was a simple fix, but they really went through the design and changed alot of things. They wanted to make sure, there was no issues in the future.
@10:20 I think they changed the striker safety lever design to remove any possibility of the trigger safety lever somehow "bouncing up" and allowing it to contact and disengage the striker safety. Now it is strictly a function of the trigger's position. In other words, the trigger HAS to move rearward for the safety lever to move upward and contact the striker safety.
I just bought my P320 M18 today and all of these videos you have uploaded are definitely gonna help me a lot! Going from a Glock to a Sig is definitely a change.
Congratulations! Glad you’re trying out something new, I hope you end up liking it! It’s always hard when starting out with a new gun to fully understand the ins and outs, so if you watch the videos and still have questions, feel free to message me via email or over in IG, I’m always happy to help!
@hirochavez99 Yes it's a big change seeing as how the SIG sits about 80% cocked when in the resting position and a Glock is unable to fire with the little bit of inertia that the spring has lol. Would you appendix carry a 1911 in condition one?
I just recently found your channel after hours researching about the drop safety issues with the P320 line. I have a used P320 X-Compact on layaway for me and now that i know what to look for, I can definitely find out if i need to do the upgrade or not. I can't thank you enough for your easy to digest video! I just subscribed to your channel, now that I'm finally getting onto the SIG bandwagon. Thank you again!
Knowing more about your Sig will most definitely make it easier to enjoy it and be confident when using it! It’s a great platform especially if you like to mod it.
Great video! I purchased a sig P320 x compact that was used but never fired. Dealer said it was likely "new old stock." I had remembered hearing about the drop issue on the 320 years ago, and wanted to make sure my pistol was manufactured with the revisions. Due to your video, I was able to confirm it has the revised parts- Thank you!
Awesome! I’m glad I could help, I made this video originally because I remembered having the exact same thought when I first started with the P320, now at least the community won’t have to wonder anymore!
I have an upgraded and a non- upgrade FCU. I carry the original with full confidence. I personally feel the drop issue was overblown. The 320 is an excellent weapon regardless of which FCU you have. Can't beat the modularity. I've written a few articles on this fine weapon. I'm a 1911 guy first and foremost.
@Greg Chabot. I hear you there. The only thing I’ll mention to this is that Sig Sauer had come out and said that by swapping out the heavy trigger to the lightened version (with zero other changes), the problem is solved. So if anything I would consider adding a lighter trigger to be in line with their professional opinion. Other than that I’m inclined to agree fully. I would definitely like to read your articles if you’ll share them with us. Drop a link/comment or email me at sigmechanics@gmail.com Anyway, thanks for watching and taking the time to comment!
I would upgrade your trigger given how “Murphy” can strike. I’d hate to be the guy who had something unusual happen where the gun gets dropped and lands at that angle and kills an innocent child or other innocent bystander all because I wouldn’t do the FREE upgrade. Really no (good) reason not to upgrade your trigger/FCU.
Great video, I don't usually comment on instructional videos. This one was explained very well and having the camera focused on the part in particular was very helpful as well. I have a new P320 DH3 and was curious how sig fixed the problem. This has me feel confident that my pistol won't go off unattentionally. Thank you for the good explanations and knowledge I appreciate it.
Thank you, I very much appreciate you taking the time to comment then! I’m also glad the video helped, since you’re new to the platform feel free to reach out if you ever have any questions.
Excellent video and explanation of the "upgraded" version. Just purchased a NIB P320 circa 2017 and the serial number came back as Not Required on the Sig site. I wanted to know the difference between pre and post models as I like to know how my firearms work and your video explained it in a very detailed way. Great job and you have earned yourself a new subscriber 👍
Thank you for the in-depth video. I just switched to all SIG and the drop issue had me somewhat concerned. But in watching your video and in taking apart my own guns to clean I realize now that it appears that they fixed any issues, again thank you.
Very interesting. I got into Sig chassis guns when they released the P250. I was a great gun if you were used to revolvers since it had a long trigger pull, but it was smooth as butter for a hammer fired gun. One of the selling points of the gun, over the other manufacturer's striker fired designs, was the ability to pull the trigger another time in the event of a light primer strike. "Second strike capability", I think they called it. It looks like the intention was to carry this over into a striker fired chassis format. I even remember the early P320 ads mentioning second strike capability. It appears that they fully dropped the entire concept with the P320 redesign and the term has entered the dust bin of history.
One of the biggest reasons the Sig and the S&W M&P will fire quicker and accidentally is because the are basically “Single Action”. The firing pin is cocked back under spring pressure. Once you touch the trigger, with very little pull and travel distance the firing pin is released forward. As compared to Glock style trigger safety on various other manufacturers, the trigger will not allow the firing pin to be released so quickly and also specifically the Glock, it’s a “Double Action” gun, the firing pin is set forward. You would have to release the Trigger safety and then pull the trigger back enough to cock the firing pin. This is one reason the triggers on Sig and M&P are lighter and quicker because of the reduced safety and travel distance. Something to keep in mind when you carry and fire these different guns.
@@tedundercarriage8183 What do you mean by "do the same thing"? As far as I can tell both the sig and m&p strikers are fully cocked after the slide cycles.
@@tedundercarriage8183 The m&p 2.0 two piece sear seams to just drop straight down like the old one. Besides glock (and obviously including the numerous glock clones), no other striker fired pistols I know of use the trigger pull to cock (or more accurately, finish cocking) the striker. I guess we could argue over exactly what constitutes something being a "glock clone", but I think you probably get the gist of my meaning.
@@dbz5808 when I watch my sear go down it looks like it would pull the striker back more than the resting position. And still there is the striker block safety.
Very good information. Also not all needed the upgrade. Mine was sent back from them stating that. My slide is different from both you're showing. Mine is chambered from factory .357sig. My 2 9mm did get the upgrade. which had those slides you were showing.
You’re doing good, great presentation… good for you on the rep for your channel. You deserve it. Videos well thought out and presented. I see you may have gotten some other new things besides the pre-update FCU. You’re going to hafta polish up this one. I see some sear housing holders… nice touch!!! One question, will the pre-update FCU work with new parts??? Good luck… glad to see your work is recognized.
Thanks @Torqd Off Half the battle is finding creative ways to best showcase those small parts without interrupting the viewer. As far as your question goes, I’d have to see. Both pre and post FCU will accept either sear housing, but I would be very interested to see how much of the pre upgrade parts inside I could fit into the updated sear housing. I assume the safety lever is no problem, but the sear may have a problem since they did change the dimensions of the housing. I’ll check it out and get back to you there, maybe post it as a short here… And FYI, i know you’ve been asking for a while now, so…I am working on a video to demonstrate the polished FCU. Just want to complete the voluntary upgrade program on my “new” chassis first. So stay tuned for that! Thanks for watching!
Thank you for the presentation! I have a question about my upgraded FCU. Why does my trigger have a double click on reset? It has a false reset then the actual reset. Can this condition be remedied? Thank you.
Initially I’d say it’s the trigger/trigger bar not seated in properly or the disconnector doing something odd. Send me an email at sigmechanics@gmail.com and we’ll see if we can answer it together based on your specific setup.
Love your content. I remember nearly a decade or so ago when Sig was reinventing it’s brand, they said that the stopped thinking of themselves as a firearm company and instead started thinking of themselves as an engineering company that happens to make firearms. It seems like they were being truthful with that statement. They are constantly analyzing their designs and making improvements to their products. People like to hate on them by saying that they use their consumers as beta testers for first-gen products, but I don’t believe that’s their intention at all. When issues do arise, they address them, and also incorporate additional changes that aren’t related to the issue they’re addressing but that make their design better. I actually own a pre-upgrade P320 that I never sent it. And I don’t plan on ever sending it in. Thanks again, for your content; I really enjoy videos!
Thank you! You don’t have to upgrade it if you recently got the 320 (assuming it’s newer than 2017), all the changes are included after that year model.
Hey you just sent me the link to this video. I really appreciate that. Unfortunately I don't have the time to go through it right now. I will here in a day or so. Thanks again for your help!!!!
...this video cleared some things up for me... :) I was second-guessing getting a 320 before as I did not understand its internals. Now I do. Others just film the gun lying on the table, rambling about how unsafe it is but that they still like the gun. Here I am not given the opinion, but rather the facts, leaving me to build my own opinion... Please keep going! 😎
Great video! I just purchased a P320 Spectre Comp as my new EDC (after training with it I will carry it) and this video was a great source of information!
@Sinsofcarolina it's very easy to EDC, good quality kydex holster is the key. I've always carried full size prior to this one so it wasn't hard to figure out. I have zero issues with comfort or printing
@@ExtinctLS1GTO nice. I’m on the taller side so hoping I can get away with it. Any specific holster you like? This gun shoots like a dream and with my larger hands I’d feel more confident with a full size vs compact for carry
@Sinsofcarolina I'm 6 foot @ 225 pounds and this thing is a breeze to carry..I personally have been loving Legacy Firearms holsters.. I've replaced all my Tier 1 for their stuff. I also have a P365 AXG Legion I'm going to start carrying for warm weather. So if you want something smaller that'll be a good option since the grip is long enough for my hands at least!
@@ExtinctLS1GTO awesome man appreciate that. I’m 6’2 and 235 lbs so we should be comparable builds. I’ve got my eyes on the XMacro Comp to rotate in for summer carry with my P-07. This Spectre Comp got me back into Sigs
Thanks @Jeff Vinter. That part took a while because I wanted it to be 1:1 scale since I may or may not be using it to make some actual parts down the road for another video idea. I’m glad you liked it! Thanks for watching.
Outstanding video,.... thanks for doing that. Just purchased a P320 and it has NOT had the upgrade yet. Do you recommend the upgrade, and if so,... are the assemblies changed, or just the parts outlined in your video combined with the original parts? That question brings up the serial number,... if the entire unit is changed they would have to re-engrave the users serial into the replacement part... How does Sig handle the serial number on the part? thanks again for a very well made video!...
I definitely would recommend upgrading. They will essentially use your existing FCU and put in some new parts. There is nothing to worry about in regards to serial number that will not change.
I have to be honest, my previous request for you to compare operational similarities between the P320 & P365 were completely for personal vindication… I was in a deep debate with someone on one of your videos about the P365 having basically the same mechanics. Mainly about the striker safety lever setups. They’re basically the same except one is built into the striker itself and the other is a stand alone. Otherwise, they work the same exact way. Even the sear engagement with the striker and how it’s reset and released. Anyway, again… great work
Yeah I noticed. I believe he started to debate everybody on every video too. I'll never remove any comments so long as it's a civil debate regardless of my opinion. However, I don't want to see it lean towards harassment...Anyway, I definitely have to start something with the 365 soon. I appreciate your sticking with the channel, glad to have you here! and thank you for the kind words.
@@SIGMECHANICS it’s an outstanding use for them. I just installed my Apex trigger kit with your videos as a guide. An incredible improvement in trigger feel, and would love to see a breakdown of the trigger with your graphic like the trigger shoe comparison.
@@Sjackson2369 well if you want a breakdown of the Apex trigger, do I ever have a video for you…(scrub to 7:43 to start and then 14:20 for breakdown): ruclips.net/video/so3b8JXJDlg/видео.html Also you can see more on the apex kit here: P320 - SECRETS OF THE APEX FORWARD SET TRIGGER BAR (2022) ruclips.net/video/twgqV49i2_8/видео.html
@@SIGMECHANICS i appreciate that. I am watching all your videos at the moment. I really enjoy seeing every last detail of a particular fire arm. I haven’t seen very many details about caliber conversion.
I have a p320 fcu that where the sear and safety is there’s a spring in it that isn’t in the gold aftermarket fcu what is the spring because that fcu has such a nice trigger
Thank you! It actually started by accident, my very first video was just on a white wall and tabletop, turns out that the reflection of light made for a better view of the gun, and the clean background was a nice change from the blacks and browns of most videos I’ve seen. Eventually it just became “the brand”. Thanks for watching!
❤...EXCELENT PRESENTATION !!! BRAVO !!! I have a technical question a little bit off the topic of this clip, but related to Sig Sauer P320 gunsmithing. I'm wondering if you know the exact dimensions of the Sig Sauer P320 xten ejector ? I intend to modify a regular P320 9mm fcu into an xten fcu. I know it has to be modified in order to fit larger size magazines and i know how to do it, but i don't known the xten ejector dimensions. THANK YOU KINDLY!!!
I have an X-Ten that I was looking to make a video for this exact thing, I just haven’t gotten around to it yet unfortunately. Off hand I don’t have that info.
Great video. Informative and helpful. Buying my first P320 soon (used). It has not been upgraded, but I plan to have it done as soon as I can. Subscribed and liked.
I am so glad you have made these videos. I am in the process of building a 320. I am starting out with a bare fcu. I was wondering if all of the post parts will fit it. I would hate to order all of the fcu parts and have them not work. This is my first SIG build. I've built many glocks and ar15's so im not new to building gun, just new to the SIG's.. Thanks again for your time to make these videos. They are a huge help.
This is a great overview - a bit behind in getting a p320 (sorry live in Commiefornia) and after getting one, been impressed with the firearm. However folks are quick to judge it citing the old drop fire issues and the reports that LEOs having AD/ND. Having an engineering background myself, this review keeps me confident in the safety. Just sad that there’s a lot of bad info out there. Wonder if anyone has data on if those ADs reported by LEOs were pre-upgrade FCUs?
I bought P320 RX compact when they came out. Shot few boxes through it then I've put gray guns flat face trigger in it, shot another few boxes but for some reason I've never fell in love with it. Never send it to Sig because I've misplaced stock parts and on a top of that I would have to get new version of trigger from GG. Still sitting in my safe waiting till I make my mind what to do with it..... One day. Lol
Awesome video! By far the best video explaining everything one needs to know about these issues plaguing the P320. My question: is the Sig P320 M18 (the one in flat dark earth and with manual safety) post updated? Thank you! New subscriber from 🇵🇭
Another p320 discharged in an officers holster in Milwaukee, WI last week. It’s the third incident since the department changed to the sigs. They are discharging in the holster without anyone manipulating it. There is video proof of the gun just going off. What is going on!?
That’s terrible to hear. Check out the video on the striker safety disengagement parameters. I think you will thoroughly enjoy that one as it closely relates to your question. However, from personal use/manipulation and testing I can’t see so many mechanical parts failing simultaneously to create a discharge when the gun is 100% not being touched. It just can’t seem to happen without the trigger being manipulated to a degree or the trigger bar moving without outside interference. Let me know your thoughts if you get a chance to watch.
at 3:41 you show how pulling the trigger causes the sear to move downward. I just removed my upgraded FCU and pulling the trigger does not move the sear at all!! Am I doing something wrong or any ideas why this is?? Thank you
I purchased a new M-18 about 3 years ago. After your great breakdown, it confirmed that I do have the upgraded version. Thank you! Since that time i purchased a Canik Mete SFX. I must say that it seems to be a far better made gun. The trigger mechanism itself is worlds better and I am FAR more accurate with it. Everything functions very smooth and no slop. Not so for the M-18. I would trust the Canik over this Sig any day. I am unable to pull the M-18 trigger without a slight barrel drop. With the Canik, I get absolutely no movement. I can readily get all shots within a 2-3-inch circle at 40 feet. I'm lucky to get one shot within a 4-inch circle with the M-18. I have no idea how this gun could/should get a military contract. That said, I have ordered the skeletonized advanced trigger in hopes that it helps. I REALLY want to like my Sig M-18!
Yikes! That’s a big difference. It could be that you just shoot better with the Canik, however, there should be no drop with a trigger pull on a loaded P320 (you will have significant slide movement with no magazine). Getting the skeletonized trigger will improve the overall feel of the pull but would not make impacts to the other things you mentioned.
@@SIGMECHANICS Wow!, that was a quick response! Yes, I was really thinking that 'I couldn't hit the broad side of a barn'...as the saying goes. I had a friend that shoots a LOT, tell me it was likely the gun/trigger. I read a lot about the Canik's and the great triggers and gave it a go. Happy I did. But still hoping to get my M-18 to work for me.
Hello ! It’s been a while since I’ve been on your channel but I have taken my 320 back out again since I am about to try it suppressed and I’m going to try a lighter spring rate. Just curious if you understand why the slide jumps when the trigger is pulled if you’re looking through the red dot it is very obvious. Thanks again for what you do on this channel….Edit… Just saw your video where you explained the situation. I will look into it thank you.
My upgrade made the gun almost unfunctional, the parts were so tight. Sig's "suggestion" was shoot until it works right. It would fail to go into battery 90% of the time as the slide kept braking on the disconnector. The second time it was sent back to the wrong address as the person in charge of shipping keyed the wrong zip code it and sent in off into the hood somewhere according to my tracking.
@The Owl Guy, what the heck! That’s terrible and not at all normal operation. Sorry to hear that. I also hate to think there’s someone out there with a gun that’s not theirs. Especially if they choose not to report it, that’s the kind of person who lacks character.
I have watched all of your videos as I purchased a P320 Compact a bit ago. When I purchased it I was unaware of the issues that had been spoken about with dropping the weapon and now more recently the weapon AD in holsters. Since I live in MA I was forced to purchase the MA compliant version of this firearm with a manual thumb safety. Does this safety in fact stop the weapon from AD during drop and during holstering and transporting the weapon (or while it is in motion)? Sorry if this is a dumb question but I was concerned once I started researching it. Your videos make me feel safe in the purchase but I wanted to ask this question.
The answer is yes and no. The drop safety issue from 2017 was resolved by simply lightening the weight of the trigger. However, it can also be said that having a manual safety installed would assist in preventing a discharged if dropped, but it is not necessarily the sole reason. It would be a good addition to the safety.
@@SIGMECHANICS So I ran about 500 rounds through it. I have several misfires in the first 200 rounds and I was actually at the range at Sig Sauer Experience Center which is close to my house and the guy told me that was normal. I’ve had no ND or AD while carry the pistol or otherwise and the safety works when pulling the trigger…So far so good. I did find this pistol packs quite a wallop compared to a Glock 19 or even a Sig 2022…Thing has a kick.
My understanding was that there were certain aspects of the upgrade that were implemented for the US military pistols. If I remember correctly, the disconnector was one of them, but I could be wrong.
I was hoping you’d describe the original trigger reset more, specifically the “double click” and how if the the trigger was pulled enough to fire, but not past the second “click,” it would result in a dead trigger.
Hi, @neelandbob. Are you talking about the pre-upgrade? If yes, then the double click is just the break and reset. I’m not aware of a double click that occurs in between those stages. However, maybe I’m not understanding what you’re saying correctly. Anyway, thanks for watching!
Yes, on some pistols, tolerances apparently made it so that it was possible to pull the trigger far enough to fire, but stop rearward travel before it hit the reset. Mine was one of them apparently. The upgrade obviously changed how the pistol resets, but the original double-click design had potential to result in failures. ruclips.net/video/kPfzvIswywY/видео.html
@neelandbob, thanks for sharing that! That is super interesting. I’ll take some time to think about what caused it. Unfortunately Sig had altered the design of the sear housing so many times, who knows if I have the same one in the affected guns.
@Douglas Philips. I appreciate your vote of confidence! My intention is to provide information purely on the merit of what I see rather than speculate on my own thoughts (or popular opinion). I enjoy breaking down the "science" much more anyway, the mechanical aspect of guns fascinate me, so simple yet so full of engineering feats. Anyway, I'm glad you enjoyed the videos. Thanks for watching!
So I bought the 320 right when they came out and didnt even hear till this video that there was an upgrade. Now I really like the way mine shoots and im fairly proficient with it. How does the upgrade feel compared to the original for shooting? Better or worse? Will it last longer? Will it feel like im shooting a different gun?
I think it loses a bit in the “crispy-ness” of the break, but makes up for it with a smoother feeling “lighter” trigger. If you’re not sure I’d recommend going to any range and asking to shoot it. You can make a more informed decision at that point since it would be hard to convey in words the differences.
@@SIGMECHANICS Wow was not expecting any one to reply let alone yourself and in seconds. Thank you and you have earned a subscriber. I will definitely push others to your channel.
@cat_puncher8539 much appreciated! Glad to have earned a sub! I leave my notifications on because I really enjoy interacting with this community. I’m honestly surprised you haven’t heard about the upgrade, it’s free but the downside is you have to FFL it to Sig, so if it’s your only gun it feels like forever.
I've been on the fence on getting a P320, but researching and seeing a breakdown of all of its safety mechanisms helps to abate those concerns. The biggest one for me was the redesign of the sear and disconnect. Breaking down my p365, I noticed a similar design. Now whether to get a p320 with or without the manual safety! On the manual safety note, does it merely block the downward movement of the sear only? Thanks!
@@4xdblack I picked one up with the manual safety. Only because I could choose to delete it later on if i like. You can find one with the manual safety, but only the Massachusetts compliant model
I think this video explain perfectly why the p320 would drop Fire pre upgrade. That internal safety and battery disconnect operation now makes them functionally safe now.
@Paul Smith, yes, although the problem was pretty specific in its parameters and therefore wouldn’t be a common thing, the trigger, and OOB disconnect are probably the best things to alleviate the issue. Thanks for watching!
I am new to Sig Sauer firearms. I do not own a p320. How would the information on your channel relate to, or overlap with, other Sig striker fired handguns such as the p365x Macro? Any reason why you would not do the same kinds of videos with the p365 variants?
I’m actually just about to jump into the P365! I’m just finishing up a few P320 projects first, then I’m giving the 365 the same focus as what I’m doing now. There is definitely overlap but it would be hard to describe as a quick text here.
I’ve got a question, asking for an opinion… currently have the Wilson Combat grip frame on my Sig M17. I’m conflicted about buying the AXG grip frame… anyone using it and with opinion of whether it’s a worthwhile upgrade???
Did it ever cross your mind that these videos you see show non-upgraded firearms? It was voluntary and I doubt many law enforcement departments would remove service weapons for repair with no spare inventory to keep officers armed.
All I know is I took advantage of the upgrade and am glad I did. I have no idea, As I know for fact some people did not bother. One person said "If it is good enough for Sig it is good enough for me" I think it is foolish not to take advantage, as at leat one person was killed alot of property damage, and this finally got attention as a Police oficer was injured. The great thing about Sig is lifetime warranty even if sold the new owner is covered.
@@SIGMECHANICS thank you for your answer I was going to try one, I need to remove the LCI that my CA unit has to make it work I just wanted to make sure that there was not a big no no on them. Thank you for your videos by the way I have learned so much about my Sig P320 this will help me take better care of this beauty . Thanks again
Thanks! As far as durability goes…I don’t think so. I’ll use the striker as an example…The forces we put on the striker run the length of it. (Ie: spring tension, primer ignition, reset). The forces are distributed forward and back on the striker body only. However, if we were talking about shear strength, where there is force coming DOWN onto the strikers circumference, then I would say “yes, definitely”. But that’s not the case here. For everything else, the types of forces exerted are way too minimal to cause malfunction I think, especially if they only move in a specifically engineered way. That’s not to say that parts can’t fail altogether, since all moving parts experience stress on any gun, but it’s also easy to “over engineer” a part…ie, they could use titanium parts, but it’s not required if steel will do the same job and that steels’ critical stress points are sufficient for the amount of use and pressures we put on them. I guess I went on a tangent here, but I hope that answers the question, lol.
@@SIGMECHANICS Thank you so much! I was just worried they decreased the lifespan of those parts, but what you said makes total sense. I appreciate the reply!
Is there more detail you can give on the pre sig safety lever spring installation? I and would really appreciate your time and effort. Cannot find any info on this matter.
question. while doing this i happened to notice i have the safety lever spring in my POST recall FCU? i thought that was taken out. regardless i put it back in. question is. did the tech at the recall mess up, or is it suppose to be there and if anything it helps resetting of the safety lever. i don’t know what to think now. lol
As a new owner of a P320 X-Five Legion this is germane to my interests. That said mine is a California model with external safety, I have to think its recent provenance means it's been extremely scrutinized. How do you feel about the P365? I walk around with one pointed at my junk every day. It does have an external safety which makes me feel a little better. I wish we could get an HK P30 here, with an LEM and bobbed hammer ain't no chance that's ever going off on its own.
Man you are simply gifted in mechanical engineering. To look at this stuff, understand it, and then present it in such a clear manner. Really impressive
I appreciate that very much and I’m glad the video was helpful! I really wish I had the 3d models I use in the newer videos back when I started because I feel they would have really helped.
Thanks again!
It's very simple and straightforward.
Thank you. An intelligent, coherent source of information is difficult to find. You’re an incredible teacher.
Thanks!
16:20 amazing footage, I can't believe you were able to show the trigger action that clearly
I have been scouring the Internet for exactly this level of information. Thank you for your time and effort.
Thanks for watching! Glad you finally found what you were looking for here.
Wow this is way more education and in depth than i thought it would be…. And it is EXACTLY what i was looking for. This has made me confident in my purchase and really helped teach in depth in an understandable manner. Fantastic work
New to the channel. Loved this video. What would be useful to the Sig community, would be a sight number chart for each pistol that will let the owner convert Sig's infamous "combat hold" sight picture into a dead-on or a 6 o'clock sight picture used by the rest of the planet.
15:00 it seems clear that the striker now interacts with the base of the sear so that it can't be rotated laterally as easily, because the ventral face of the striker hits the dorsal face of the sear. Seems like a smart change to me
Wow, can I just say I “like” a video every now and then. As far as channels I am subscribe to, there are very few. Your channel has just been added to the list. In-depth and educational is an understatement. I had a lot of concerns about buying this pistol. The knowledge I easily acquired through your videos has put my mind at ease and secured my decision. Thank you.
Hey @Joshua Fratti! That’s very kind of you to say, I’m glad to have earned your sub!
The goal of the channel has always been to inspire confidence through education, so people will be comfortable with their firearms and try new things. Of course, that’s much easier when you feel you understand your gun down to its core, so your exactly the type of subscriber I built Sig Mechanics for. Anyway, I’m glad to have you here!
If you ever have any questions let me know you can always reach me at sigmechanics@gmail.com
15:15 A possible explanation as to why Sig reduced the sear's vertical ledge was to keep sear/striker engagement more consistent. Unlike hammer fired guns which have all relevant engagement surfaces fixed to the frame (and therefore fixed relative to each other), striker-fired guns have to account for the slop between slide and frame as well as the striker's play within its channel. So every time the slide moves forward and the striker touches the sear their engagement may be slightly different from the last. This is why when adjusting overtravel on a striker fired gun it is important to push the slide down towards the frame while testing to make sure there is enough travel to achieve break even when engagement between sear and striker are at their maximum.
By getting the striker's leg to touch the base of the sear, Sig limits how far down the striker's leg can go, ensuring that the contact area between the striker's leg and the sear's ledge has less variation, in turn leading to a more consistent trigger pull shot-to-shot. At least, this is my (somewhat) educated guess.
I just came across your channel. Your presentation, explanations, and attention to detail complete with measurements are fantastic! I do hope that you consider covering aftermarket trigger parts like those from Grayguns and Apex and show how they differ from OEM. In any case, keep up the great work!
Nice video! and folks, that is why the updated version of the p320 and the new p320s are not going to go off in your holster by accident. That trigger has to move for that gun to go off, and the video is very professionally done. Thank you
How about the video from gunghis khan? I believe he had a new sig. genuine question as I like the p320 but the safety issues are concerning
I have done a very thorough mockup of the P320 with the update from now years back and the newer x5 and p320 legions, etc. And there is no possible way the gun will go off without pulling the trigger.
I should also point out that in his video he stated that the reset spring was broken and Sig, claimed that was the failure. In reality, Sig, had already discontinued the use of that part because they considered the striker reset spring redundant. Therefore, that claim does not hold any weight, and the reality of the situation is most likely that the trigger was pulled inadvertently.
@@SIGMECHANICS I like how people like you continue to make excuses.
@@w00borg34i mean he was in middle of competition and reholstering, not crazy to think his shirt or finger could have engaged the trigger when reholstering. mind you i stopped carrying my 320 after that video but still, could have easily had finger or something in trigger. trying to be fast hes in competition adrenaline running and reholstering
This video is absolutely invaluable with all the current controversy surrounding the Sig p320.
Seriously. There are a bunch of mechanically ignorant scairdy cats out there.
As I have posted in every P320 video...
*I WILL BUY YOUR DANGEROUS P320! ALL OF THEM! NO LIMIT!*
@@m4rvinmartian I got an axg legion I’ve been second guessing 😅 (only because I bought it, watched some cool videos on it and THEN started seeing all the AC incidents. Like why RUclips did that to me I’ll never know 🤷♂️)
@bobdylan7432 Don’t let RUclips get you worried. Unfortunately, doom and gloom gets more clicks and therefore lots of channels push that narrative. I have quite a few videos that will help give you piece of mind, all backed by on-screen testing and data.
You have an amazing gun! Enjoy it!!
@@SIGMECHANICS very true, easier for people who have ND’s to hop on the bandwagon of a few bad incidents and actually deflect the responsibility and embarrassment. Thank you for your videos, they articulate the function and mechanics of the 320 spectacularly and I(among many others) appreciate the time and effort put into them.
@@m4rvinmartian Just happened to a police officer in a town near me. Gun fired when he set the holster down on a table. He must have been mechanically ignorant.
It's crazy I thought it was a simple fix, but they really went through the design and changed alot of things. They wanted to make sure, there was no issues in the future.
@10:20 I think they changed the striker safety lever design to remove any possibility of the trigger safety lever somehow "bouncing up" and allowing it to contact and disengage the striker safety. Now it is strictly a function of the trigger's position. In other words, the trigger HAS to move rearward for the safety lever to move upward and contact the striker safety.
I just bought my P320 M18 today and all of these videos you have uploaded are definitely gonna help me a lot! Going from a Glock to a Sig is definitely a change.
Congratulations! Glad you’re trying out something new, I hope you end up liking it! It’s always hard when starting out with a new gun to fully understand the ins and outs, so if you watch the videos and still have questions, feel free to message me via email or over in IG, I’m always happy to help!
@hirochavez99 Yes it's a big change seeing as how the SIG sits about 80% cocked when in the resting position and a Glock is unable to fire with the little bit of inertia that the spring has lol. Would you appendix carry a 1911 in condition one?
Thanks for putting this video out. It definitely has put my mind at ease to edc my P320.
Bravo! 👏
Mine too.
Your work/dedication is phenomenal. You are very appreciated. Thank you so much
Thank you @Mercedes Carballo, I appreciate your saying that.
I just recently found your channel after hours researching about the drop safety issues with the P320 line. I have a used P320 X-Compact on layaway for me and now that i know what to look for, I can definitely find out if i need to do the upgrade or not. I can't thank you enough for your easy to digest video! I just subscribed to your channel, now that I'm finally getting onto the SIG bandwagon. Thank you again!
Knowing more about your Sig will most definitely make it easier to enjoy it and be confident when using it! It’s a great platform especially if you like to mod it.
Great video! I purchased a sig P320 x compact that was used but never fired. Dealer said it was likely "new old stock." I had remembered hearing about the drop issue on the 320 years ago, and wanted to make sure my pistol was manufactured with the revisions.
Due to your video, I was able to confirm it has the revised parts- Thank you!
Awesome! I’m glad I could help, I made this video originally because I remembered having the exact same thought when I first started with the P320, now at least the community won’t have to wonder anymore!
I have an upgraded and a non- upgrade FCU. I carry the original with full confidence. I personally feel the drop issue was overblown. The 320 is an excellent weapon regardless of which FCU you have. Can't beat the modularity. I've written a few articles on this fine weapon. I'm a 1911 guy first and foremost.
@Greg Chabot. I hear you there. The only thing I’ll mention to this is that Sig Sauer had come out and said that by swapping out the heavy trigger to the lightened version (with zero other changes), the problem is solved.
So if anything I would consider adding a lighter trigger to be in line with their professional opinion. Other than that I’m inclined to agree fully. I would definitely like to read your articles if you’ll share them with us. Drop a link/comment or email me at sigmechanics@gmail.com
Anyway, thanks for watching and taking the time to comment!
I would upgrade your trigger given how “Murphy” can strike. I’d hate to be the guy who had something unusual happen where the gun gets dropped and lands at that angle and kills an innocent child or other innocent bystander all because I wouldn’t do the FREE upgrade. Really no (good) reason not to upgrade your trigger/FCU.
I fully encourage you to appendix carry then. Especially the original.
@@jameylane1591 I do everyday nothing to be afraid of sir.
Videos still coming out that sigs firing on there own
Chefs kiss. Bravo. Beautifully done
Such a great detailed breakdown an informational piece. Much appreciated!
@Donald Coleman, thanks!
Thank you! This video is one of the best that I've ever seen on a firearm topic.
That’s very much appreciated! Thank you for watching.
This eases my mind about carrying mine with one in the pipe!
Great video. You also have a very pleasant voice, which aids in understanding the differences in the FCU’s.
Thanks!
Great video, I don't usually comment on instructional videos. This one was explained very well and having the camera focused on the part in particular was very helpful as well. I have a new P320 DH3 and was curious how sig fixed the problem. This has me feel confident that my pistol won't go off unattentionally. Thank you for the good explanations and knowledge I appreciate it.
Thank you, I very much appreciate you taking the time to comment then! I’m also glad the video helped, since you’re new to the platform feel free to reach out if you ever have any questions.
Excellent video and explanation of the "upgraded" version. Just purchased a NIB P320 circa 2017 and the serial number came back as Not Required on the Sig site. I wanted to know the difference between pre and post models as I like to know how my firearms work and your video explained it in a very detailed way. Great job and you have earned yourself a new subscriber 👍
Thank you! Enjoy your new 320!! You’re going to really enjoy the platform. If you ever have any questions feel free to send me a message.
Thank you for the in-depth video. I just switched to all SIG and the drop issue had me somewhat concerned. But in watching your video and in taking apart my own guns to clean I realize now that it appears that they fixed any issues, again thank you.
Hi @Claude Johnson. I’m glad to hear the videos were helpful! Thanks for watching.
Very interesting. I got into Sig chassis guns when they released the P250. I was a great gun if you were used to revolvers since it had a long trigger pull, but it was smooth as butter for a hammer fired gun. One of the selling points of the gun, over the other manufacturer's striker fired designs, was the ability to pull the trigger another time in the event of a light primer strike. "Second strike capability", I think they called it.
It looks like the intention was to carry this over into a striker fired chassis format. I even remember the early P320 ads mentioning second strike capability. It appears that they fully dropped the entire concept with the P320 redesign and the term has entered the dust bin of history.
That’s very interesting! I didn’t hear about the second strike thing before, I’ll definitely look into it. Thanks!!
One of the biggest reasons the Sig and the S&W M&P will fire quicker and accidentally is because the are basically “Single Action”. The firing pin is cocked back under spring pressure. Once you touch the trigger, with very little pull and travel distance the firing pin is released forward. As compared to Glock style trigger safety on various other manufacturers, the trigger will not allow the firing pin to be released so quickly and also specifically the Glock, it’s a “Double Action” gun, the firing pin is set forward. You would have to release the Trigger safety and then pull the trigger back enough to cock the firing pin. This is one reason the triggers on Sig and M&P are lighter and quicker because of the reduced safety and travel distance. Something to keep in mind when you carry and fire these different guns.
you know both of those guns do the same thing as glocks right?
@@tedundercarriage8183 What do you mean by "do the same thing"? As far as I can tell both the sig and m&p strikers are fully cocked after the slide cycles.
@@dbz5808 that's not the case with m&p 2.0, can't say for new sigs since they have changed so much
@@tedundercarriage8183 The m&p 2.0 two piece sear seams to just drop straight down like the old one. Besides glock (and obviously including the numerous glock clones), no other striker fired pistols I know of use the trigger pull to cock (or more accurately, finish cocking) the striker.
I guess we could argue over exactly what constitutes something being a "glock clone", but I think you probably get the gist of my meaning.
@@dbz5808 when I watch my sear go down it looks like it would pull the striker back more than the resting position. And still there is the striker block safety.
My 320 was bought a few months ago and I didn't know anything about the pre vs post upgrade crap and had to send mine in
Thanks so much for the deep dive into this. Super informative.
Very good information. Also not all needed the upgrade. Mine was sent back from them stating that. My slide is different from both you're showing. Mine is chambered from factory .357sig. My 2 9mm did get the upgrade. which had those slides you were showing.
I am going to start modifying my p320 based on this video. Thanks for layout general ideas and roadmap for improvement.
You’re very welcome, if you have questions while working feel free to get in touch.
Nicely done!! Perhaps a future vid could cover the differences between the 9/.40/.357 and the .45 FCUs.
Absolutely, yes! I'll see what I can do, I've added it to the list. Thanks for watching! Glad to have you here.
You’re doing good, great presentation… good for you on the rep for your channel. You deserve it. Videos well thought out and presented. I see you may have gotten some other new things besides the pre-update FCU. You’re going to hafta polish up this one. I see some sear housing holders… nice touch!!! One question, will the pre-update FCU work with new parts??? Good luck… glad to see your work is recognized.
Thanks @Torqd Off
Half the battle is finding creative ways to best showcase those small parts without interrupting the viewer.
As far as your question goes, I’d have to see. Both pre and post FCU will accept either sear housing, but I would be very interested to see how much of the pre upgrade parts inside I could fit into the updated sear housing. I assume the safety lever is no problem, but the sear may have a problem since they did change the dimensions of the housing.
I’ll check it out and get back to you there, maybe post it as a short here…
And FYI, i know you’ve been asking for a while now, so…I am working on a video to demonstrate the polished FCU. Just want to complete the voluntary upgrade program on my “new” chassis first. So stay tuned for that!
Thanks for watching!
Thank you for the presentation! I have a question about my upgraded FCU. Why does my trigger have a double click on reset? It has a false reset then the actual reset. Can this condition be remedied? Thank you.
Initially I’d say it’s the trigger/trigger bar not seated in properly or the disconnector doing something odd. Send me an email at sigmechanics@gmail.com and we’ll see if we can answer it together based on your specific setup.
Love your content. I remember nearly a decade or so ago when Sig was reinventing it’s brand, they said that the stopped thinking of themselves as a firearm company and instead started thinking of themselves as an engineering company that happens to make firearms.
It seems like they were being truthful with that statement. They are constantly analyzing their designs and making improvements to their products. People like to hate on them by saying that they use their consumers as beta testers for first-gen products, but I don’t believe that’s their intention at all. When issues do arise, they address them, and also incorporate additional changes that aren’t related to the issue they’re addressing but that make their design better.
I actually own a pre-upgrade P320 that I never sent it. And I don’t plan on ever sending it in.
Thanks again, for your content; I really enjoy videos!
I regret sending mine in
That's some insane engineering for a polymer pistol
Thank you for explaining I just got my P320C a month ago so I feel like I don't have to change it thank you for professional review asome job!!!
Thank you! You don’t have to upgrade it if you recently got the 320 (assuming it’s newer than 2017), all the changes are included after that year model.
Hey you just sent me the link to this video. I really appreciate that. Unfortunately I don't have the time to go through it right now. I will here in a day or so. Thanks again for your help!!!!
...this video cleared some things up for me... :)
I was second-guessing getting a 320 before as I did not understand its internals. Now I do.
Others just film the gun lying on the table, rambling about how unsafe it is but that they still like the gun.
Here I am not given the opinion, but rather the facts, leaving me to build my own opinion...
Please keep going! 😎
Glad I could help!
Absolutely great videos. Thank you
Thank you!
Great video! I just purchased a P320 Spectre Comp as my new EDC (after training with it I will carry it) and this video was a great source of information!
Any luck in the past year figuring out how to EDC this hand cannon?
@Sinsofcarolina it's very easy to EDC, good quality kydex holster is the key. I've always carried full size prior to this one so it wasn't hard to figure out. I have zero issues with comfort or printing
@@ExtinctLS1GTO nice. I’m on the taller side so hoping I can get away with it. Any specific holster you like? This gun shoots like a dream and with my larger hands I’d feel more confident with a full size vs compact for carry
@Sinsofcarolina I'm 6 foot @ 225 pounds and this thing is a breeze to carry..I personally have been loving Legacy Firearms holsters.. I've replaced all my Tier 1 for their stuff. I also have a P365 AXG Legion I'm going to start carrying for warm weather. So if you want something smaller that'll be a good option since the grip is long enough for my hands at least!
@@ExtinctLS1GTO awesome man appreciate that. I’m 6’2 and 235 lbs so we should be comparable builds. I’ve got my eyes on the XMacro Comp to rotate in for summer carry with my P-07. This Spectre Comp got me back into Sigs
“Accomplished” “Upgrade” very choice words, either way informative video.
You’ve answered my questions and concerns and now I have neither. Thank you for your time and the presentation liked and subscribed.
Thank you! I’m always happy to hear I earned a sub from the content! If you ever need some help feel free to shoot me a message.
Awesome video, especially the simulation part!
Thanks @Jeff Vinter. That part took a while because I wanted it to be 1:1 scale since I may or may not be using it to make some actual parts down the road for another video idea.
I’m glad you liked it! Thanks for watching.
Fantastic vid. Thanks. I pulled my post-upgrade version out to follow along. 😄
Lol, best way to learn something for certain is to get hands on! Glad you enjoyed it and thanks for the kind words.
The tab sticking up on the right side of the pre upgrade frame, was a carryover from the p250 firing pin blocker, when the slide was out of battery.
I appreciate the insight! I've asked several Sig reps with no-one being able to give me a response.
Fantastic explanation and visuals. Thank you.
Great analysis...just what I needed.
Outstanding video,.... thanks for doing that. Just purchased a P320 and it has NOT had the upgrade yet. Do you recommend the upgrade, and if so,... are the assemblies changed, or just the parts outlined in your video combined with the original parts? That question brings up the serial number,... if the entire unit is changed they would have to re-engrave the users serial into the replacement part... How does Sig handle the serial number on the part? thanks again for a very well made video!...
I definitely would recommend upgrading. They will essentially use your existing FCU and put in some new parts. There is nothing to worry about in regards to serial number that will not change.
I have to be honest, my previous request for you to compare operational similarities between the P320 & P365 were completely for personal vindication… I was in a deep debate with someone on one of your videos about the P365 having basically the same mechanics. Mainly about the striker safety lever setups. They’re basically the same except one is built into the striker itself and the other is a stand alone. Otherwise, they work the same exact way. Even the sear engagement with the striker and how it’s reset and released. Anyway, again… great work
Yeah I noticed. I believe he started to debate everybody on every video too. I'll never remove any comments so long as it's a civil debate regardless of my opinion. However, I don't want to see it lean towards harassment...Anyway, I definitely have to start something with the 365 soon. I appreciate your sticking with the channel, glad to have you here! and thank you for the kind words.
An excellent breakdown of the P320, but I also want to commend the use of MAGNETS as a display stand. brilliant.
Thank you! Not many people catch into the magnets, good eye.
@@SIGMECHANICS it’s an outstanding use for them. I just installed my Apex trigger kit with your videos as a guide. An incredible improvement in trigger feel, and would love to see a breakdown of the trigger with your graphic like the trigger shoe comparison.
@@Sjackson2369 well if you want a breakdown of the Apex trigger, do I ever have a video for you…(scrub to 7:43 to start and then 14:20 for breakdown): ruclips.net/video/so3b8JXJDlg/видео.html
Also you can see more on the apex kit here:
P320 - SECRETS OF THE APEX FORWARD SET TRIGGER BAR (2022)
ruclips.net/video/twgqV49i2_8/видео.html
Best video on the subject ever.
I’m very excited. Will be starting my first P320 build off the Custom FCU. Your videos are awesome
@ryanburbridge. Thanks! You’re so lucky. The potential with a custom FCU is infinite with the P320! Let me know if you need anything as you go.
@@SIGMECHANICS i appreciate that. I am watching all your videos at the moment. I really enjoy seeing every last detail of a particular fire arm.
I haven’t seen very many details about caliber conversion.
Loads of data… well thought out and presented! Thanks.
@Ducci Mann...Glad you enjoyed it and very kind of you to say! Stay tuned there is more on the way.
I have a p320 fcu that where the sear and safety is there’s a spring in it that isn’t in the gold aftermarket fcu what is the spring because that fcu has such a nice trigger
Just got a Sig. great knowledge. I just got taken to school.
Your photography/videography is excellent! AMD, I like the grayscale.
Thank you! It actually started by accident, my very first video was just on a white wall and tabletop, turns out that the reflection of light made for a better view of the gun, and the clean background was a nice change from the blacks and browns of most videos I’ve seen. Eventually it just became “the brand”. Thanks for watching!
❤...EXCELENT PRESENTATION !!! BRAVO !!! I have a technical question a little bit off the topic of this clip, but related to Sig Sauer P320 gunsmithing. I'm wondering if you know the exact dimensions of the Sig Sauer P320 xten ejector ? I intend to modify a regular P320 9mm fcu into an xten fcu. I know it has to be modified in order to fit larger size magazines and i know how to do it, but i don't known the xten ejector dimensions. THANK YOU KINDLY!!!
I have an X-Ten that I was looking to make a video for this exact thing, I just haven’t gotten around to it yet unfortunately. Off hand I don’t have that info.
Great video. Informative and helpful. Buying my first P320 soon (used). It has not been upgraded, but I plan to have it done as soon as I can. Subscribed and liked.
@BMJ, Glad the video was helpful! Let me know if you have any questions once you get you new P320.
These vids are fantastic
@Abolish the ATF and Repeal the NFA, thank you!
I am so glad you have made these videos. I am in the process of building a 320. I am starting out with a bare fcu. I was wondering if all of the post parts will fit it. I would hate to order all of the fcu parts and have them not work. This is my first SIG build. I've built many glocks and ar15's so im not new to building gun, just new to the SIG's.. Thanks again for your time to make these videos. They are a huge help.
It’s my absolute pleasure! I’m glad I could help.
This is a great overview - a bit behind in getting a p320 (sorry live in Commiefornia) and after getting one, been impressed with the firearm. However folks are quick to judge it citing the old drop fire issues and the reports that LEOs having AD/ND. Having an engineering background myself, this review keeps me confident in the safety. Just sad that there’s a lot of bad info out there. Wonder if anyone has data on if those ADs reported by LEOs were pre-upgrade FCUs?
Incredible and very well done video. Thank you!
Thank you @Eric Nelson!
I bought P320 RX compact when they came out. Shot few boxes through it then I've put gray guns flat face trigger in it, shot another few boxes but for some reason I've never fell in love with it. Never send it to Sig because I've misplaced stock parts and on a top of that I would have to get new version of trigger from GG. Still sitting in my safe waiting till I make my mind what to do with it..... One day. Lol
I would imagine Gray Guns would replace the trigger for free, and SIG would do the upgrade without the stock parts. It's a safety thing after all.
Awesome video! By far the best video explaining everything one needs to know about these issues plaguing the P320.
My question: is the Sig P320 M18 (the one in flat dark earth and with manual safety) post updated?
Thank you! New subscriber from 🇵🇭
Thank you! The easiest way to confirm if you have the updated version is to see if you have a disconnector. If you have it, you are good to go!
This has aged like fine wine.
Great presentation!
@patton9970, thank you!
Wow what a fantastic and proffessional video!
Thank you!
Another p320 discharged in an officers holster in Milwaukee, WI last week. It’s the third incident since the department changed to the sigs. They are discharging in the holster without anyone manipulating it. There is video proof of the gun just going off. What is going on!?
That’s terrible to hear. Check out the video on the striker safety disengagement parameters. I think you will thoroughly enjoy that one as it closely relates to your question. However, from personal use/manipulation and testing I can’t see so many mechanical parts failing simultaneously to create a discharge when the gun is 100% not being touched. It just can’t seem to happen without the trigger being manipulated to a degree or the trigger bar moving without outside interference. Let me know your thoughts if you get a chance to watch.
I hate to believe it. I love my Sig. I saw the videos with my own eyes. Officers don’t have their hands near the holster or firearm. It’s odd.
@@dcliffdraw Yes, it is odd. Perhaps fake? There is a lot of money at stake here.
at 3:41 you show how pulling the trigger causes the sear to move downward. I just removed my upgraded FCU and pulling the trigger does not move the sear at all!! Am I doing something wrong or any ideas why this is?? Thank you
Move your slide catch up to release the takedown lever bar (black bar) and you will be able to move it.
I purchased a new M-18 about 3 years ago. After your great breakdown, it confirmed that I do have the upgraded version. Thank you!
Since that time i purchased a Canik Mete SFX. I must say that it seems to be a far better made gun. The trigger mechanism itself is worlds better and I am FAR more accurate with it. Everything functions very smooth and no slop. Not so for the M-18. I would trust the Canik over this Sig any day.
I am unable to pull the M-18 trigger without a slight barrel drop. With the Canik, I get absolutely no movement. I can readily get all shots within a 2-3-inch circle at 40 feet. I'm lucky to get one shot within a 4-inch circle with the M-18. I have no idea how this gun could/should get a military contract. That said, I have ordered the skeletonized advanced trigger in hopes that it helps.
I REALLY want to like my Sig M-18!
Yikes! That’s a big difference. It could be that you just shoot better with the Canik, however, there should be no drop with a trigger pull on a loaded P320 (you will have significant slide movement with no magazine).
Getting the skeletonized trigger will improve the overall feel of the pull but would not make impacts to the other things you mentioned.
@@SIGMECHANICS Wow!, that was a quick response! Yes, I was really thinking that 'I couldn't hit the broad side of a barn'...as the saying goes. I had a friend that shoots a LOT, tell me it was likely the gun/trigger. I read a lot about the Canik's and the great triggers and gave it a go. Happy I did. But still hoping to get my M-18 to work for me.
Hello ! It’s been a while since I’ve been on your channel but I have taken my 320 back out again since I am about to try it suppressed and I’m going to try a lighter spring rate. Just curious if you understand why the slide jumps when the trigger is pulled if you’re looking through the red dot it is very obvious. Thanks again for what you do on this channel….Edit…
Just saw your video where you explained the situation. I will look into it thank you.
I still have the OG 320 and never once had an issue
What a genius company! There guns are finally drop-safe! A real accomplishment.
To be fair they were always drop safe, just not at that exact -30 degree angle!
@@SIGMECHANICS Right, and who in his right mind would ever drop a gun at that angle?!
My upgrade made the gun almost unfunctional, the parts were so tight. Sig's "suggestion" was shoot until it works right.
It would fail to go into battery 90% of the time as the slide kept braking on the disconnector. The second time it was sent back to the wrong address as the person in charge of shipping keyed the wrong zip code it and sent in off into the hood somewhere according to my tracking.
@The Owl Guy, what the heck! That’s terrible and not at all normal operation. Sorry to hear that. I also hate to think there’s someone out there with a gun that’s not theirs. Especially if they choose not to report it, that’s the kind of person who lacks character.
Another excellent video.
Thank you! @John Stewart.
I have watched all of your videos as I purchased a P320 Compact a bit ago. When I purchased it I was unaware of the issues that had been spoken about with dropping the weapon and now more recently the weapon AD in holsters. Since I live in MA I was forced to purchase the MA compliant version of this firearm with a manual thumb safety. Does this safety in fact stop the weapon from AD during drop and during holstering and transporting the weapon (or while it is in motion)? Sorry if this is a dumb question but I was concerned once I started researching it. Your videos make me feel safe in the purchase but I wanted to ask this question.
The answer is yes and no. The drop safety issue from 2017 was resolved by simply lightening the weight of the trigger. However, it can also be said that having a manual safety installed would assist in preventing a discharged if dropped, but it is not necessarily the sole reason. It would be a good addition to the safety.
@@SIGMECHANICS awesome thanks for your reply. I’ll run a bunch of rounds through it and report back. This is a great education channel.
@@SIGMECHANICS So I ran about 500 rounds through it. I have several misfires in the first 200 rounds and I was actually at the range at Sig Sauer Experience Center which is close to my house and the guy told me that was normal. I’ve had no ND or AD while carry the pistol or otherwise and the safety works when pulling the trigger…So far so good. I did find this pistol packs quite a wallop compared to a Glock 19 or even a Sig 2022…Thing has a kick.
I wonder if the upgraded mechanism would still win the US Army pistol trials? Also the US Army did not upgrade their delivered or future pistols.
My understanding was that there were certain aspects of the upgrade that were implemented for the US military pistols. If I remember correctly, the disconnector was one of them, but I could be wrong.
Excellent work,, as usual ..
I was hoping you’d describe the original trigger reset more, specifically the “double click” and how if the the trigger was pulled enough to fire, but not past the second “click,” it would result in a dead trigger.
Hi, @neelandbob. Are you talking about the pre-upgrade? If yes, then the double click is just the break and reset. I’m not aware of a double click that occurs in between those stages. However, maybe I’m not understanding what you’re saying correctly. Anyway, thanks for watching!
Yes, on some pistols, tolerances apparently made it so that it was possible to pull the trigger far enough to fire, but stop rearward travel before it hit the reset. Mine was one of them apparently. The upgrade obviously changed how the pistol resets, but the original double-click design had potential to result in failures. ruclips.net/video/kPfzvIswywY/видео.html
@neelandbob, thanks for sharing that! That is super interesting. I’ll take some time to think about what caused it. Unfortunately Sig had altered the design of the sear housing so many times, who knows if I have the same one in the affected guns.
Wow good video, great videography! Thanks much.. Just subscribed! 👍
Awesome! Glad to have you here. Thank you for your kind compliment too.
Thank you learned a lot excellent video.
@soulofstone Thanks! Glad it helped!
It seems I can't spell or use proper grammar either. Thank you for the video .
Appreciate professional reviews on facts of design on this gun cause a lot of misinformation out there.
@Douglas Philips. I appreciate your vote of confidence! My intention is to provide information purely on the merit of what I see rather than speculate on my own thoughts (or popular opinion). I enjoy breaking down the "science" much more anyway, the mechanical aspect of guns fascinate me, so simple yet so full of engineering feats.
Anyway, I'm glad you enjoyed the videos. Thanks for watching!
So I bought the 320 right when they came out and didnt even hear till this video that there was an upgrade. Now I really like the way mine shoots and im fairly proficient with it. How does the upgrade feel compared to the original for shooting? Better or worse? Will it last longer? Will it feel like im shooting a different gun?
I think it loses a bit in the “crispy-ness” of the break, but makes up for it with a smoother feeling “lighter” trigger. If you’re not sure I’d recommend going to any range and asking to shoot it. You can make a more informed decision at that point since it would be hard to convey in words the differences.
@@SIGMECHANICS Wow was not expecting any one to reply let alone yourself and in seconds. Thank you and you have earned a subscriber. I will definitely push others to your channel.
@cat_puncher8539 much appreciated! Glad to have earned a sub! I leave my notifications on because I really enjoy interacting with this community.
I’m honestly surprised you haven’t heard about the upgrade, it’s free but the downside is you have to FFL it to Sig, so if it’s your only gun it feels like forever.
I've been on the fence on getting a P320, but researching and seeing a breakdown of all of its safety mechanisms helps to abate those concerns. The biggest one for me was the redesign of the sear and disconnect. Breaking down my p365, I noticed a similar design. Now whether to get a p320 with or without the manual safety!
On the manual safety note, does it merely block the downward movement of the sear only? Thanks!
I'd personally prefer one with a manual safety, but it's difficult to find without getting the m17 or m18
@@4xdblack I picked one up with the manual safety. Only because I could choose to delete it later on if i like. You can find one with the manual safety, but only the Massachusetts compliant model
@4xdblack... Stay tuned ;)
I think this video explain perfectly why the p320 would drop Fire pre upgrade. That internal safety and battery disconnect operation now makes them functionally safe now.
@Paul Smith, yes, although the problem was pretty specific in its parameters and therefore wouldn’t be a common thing, the trigger, and OOB disconnect are probably the best things to alleviate the issue. Thanks for watching!
*10:15** Weight/Inertia removal.*
Such a great video!
I am new to Sig Sauer firearms. I do not own a p320. How would the information on your channel relate to, or overlap with, other Sig striker fired handguns such as the p365x Macro? Any reason why you would not do the same kinds of videos with the p365 variants?
I’m actually just about to jump into the P365! I’m just finishing up a few P320 projects first, then I’m giving the 365 the same focus as what I’m doing now. There is definitely overlap but it would be hard to describe as a quick text here.
@@SIGMECHANICS Great! Looking forward to those vids.
I’ve got a question, asking for an opinion… currently have the Wilson Combat grip frame on my Sig M17. I’m conflicted about buying the AXG grip frame… anyone using it and with opinion of whether it’s a worthwhile upgrade???
You will love it
lol videos still showing up even though sig did this upgrade sig 320 are not safe got rid of mine got something else too carry
Did it ever cross your mind that these videos you see show non-upgraded firearms? It was voluntary and I doubt many law enforcement departments would remove service weapons for repair with no spare inventory to keep officers armed.
All I know is I took advantage of the upgrade and am glad I did. I have no idea, As I know for fact some people did not bother. One person said "If it is good enough for Sig it is good enough for me" I think it is foolish not to take advantage, as at leat one person was killed alot of property damage, and this finally got attention as a Police oficer was injured. The great thing about Sig is lifetime warranty even if sold the new owner is covered.
Quick question Edmond what do you think about the Armory Craft Bull Barrel for the P320 X5 Legion
Regrettably, I haven’t had a chance to try one yet. Aesthetically, I think they look great though!
@@SIGMECHANICS thank you for your answer I was going to try one, I need to remove the LCI that my CA unit has to make it work I just wanted to make sure that there was not a big no no on them. Thank you for your videos by the way I have learned so much about my Sig P320 this will help me take better care of this beauty . Thanks again
Excellent explanation 👍👍
Awesome man! Do you think they decreased the the durability/longevity of the pistol with all the lightening cuts?
Thanks! As far as durability goes…I don’t think so. I’ll use the striker as an example…The forces we put on the striker run the length of it. (Ie: spring tension, primer ignition, reset). The forces are distributed forward and back on the striker body only.
However, if we were talking about shear strength, where there is force coming DOWN onto the strikers circumference, then I would say “yes, definitely”. But that’s not the case here.
For everything else, the types of forces exerted are way too minimal to cause malfunction I think, especially if they only move in a specifically engineered way.
That’s not to say that parts can’t fail altogether, since all moving parts experience stress on any gun, but it’s also easy to “over engineer” a part…ie, they could use titanium parts, but it’s not required if steel will do the same job and that steels’ critical stress points are sufficient for the amount of use and pressures we put on them.
I guess I went on a tangent here, but I hope that answers the question, lol.
@@SIGMECHANICS Thank you so much! I was just worried they decreased the lifespan of those parts, but what you said makes total sense. I appreciate the reply!
Is there more detail you can give on the pre sig safety lever spring installation? I and would really appreciate your time and effort. Cannot find any info on this matter.
I don’t but you can always email me at sigmechanics@gmail.com and I can try to help you or answer any questions you have.
Simply fabulous. 👍
question. while doing this i happened to notice i have the safety lever spring in my POST recall FCU?
i thought that was taken out. regardless i put it back in.
question is. did the tech at the recall mess up, or is it suppose to be there and if anything it helps resetting of the safety lever. i don’t know what to think now. lol
As a new owner of a P320 X-Five Legion this is germane to my interests. That said mine is a California model with external safety, I have to think its recent provenance means it's been extremely scrutinized. How do you feel about the P365? I walk around with one pointed at my junk every day. It does have an external safety which makes me feel a little better. I wish we could get an HK P30 here, with an LEM and bobbed hammer ain't no chance that's ever going off on its own.
The 365 is definitely an evolution to the 320, I can see Sig pushing /marketing the 365 more as modularity increases.