Is the Mk18 Reliable? Colt/Daniel Defense Torture Test
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- Опубликовано: 7 ноя 2022
- In this episode of TFBTV, @JamesReeves asks "is the Mk18 reliable?" For the unaware, the Mk18 is, more or less, a 10.3" barrel short and compact AR-15 or M4 that is common in the special operations community. There have been criticisms of the platform over the years and calls for its replacement - but does it really need replacing? To answer the question, James reviews military and government reports about experiments on the Mk18 and discusses them. Additionally, and just for fun, the TFBTV crew and Pensacola Police Department SWAT throw together an informal torture test to see how tough the Daniel Defense @DanielDefense and @TheColtFirearms Colt full-auto M4 lower combo - similar to what would be issued to the special forces operators who use this setup - really is. To make things a little bit more interesting, we run the Mk18 with a HUXWRX Flow556k 3D printed suppressor the whole time.
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Sources:
apps.dtic.mil/sti/pdfs/ADA519...
www.slideshare.net/1st_TSG_Ai...
static1.squarespace.com/stati...
www.cna.org/reports/2006/D001... 
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I've done extensive testing with my 10.3 ar. I take it out to the range, shoot 60 to 90 rounds through it, clean it and put it back in the safe. It even survived getting a small scratch when it bumped up against at tree. 🤣🤣
Doesn't that, like, violate the warranty? I mean, that's some serious usage.
@Daniel J. Bray I hope not, im up to 500 rounds and the barrel is probably starting to wear out. I should send it in for inspection. 🤣
@Daniel J. Bray I'm afraid the warranty is void, one time I left the dust cover open when I put in the safe. It was open for almost 2 hours before I found my mistake and closed it
One of my neighbors came over and dropped the bolt on an empty chamber on my DD. Do you guys still think it's safe to shoot?
@@tfbtv nope. Whole system needs to be replaced. I know a good home for it
James: Loves DD rifles
Also James: Violently yeets them into the air at every opportunity
True story, I have only one personally owned DD. I did that video on the V7 with MFR rail and I liked it so much I picked one up in Deep Woods. The other DDs I've reviewed (Mk18 RIS II, Mk18 RIS III, M4 RIII) have all been loaners, so I can beat the shit out of them and not feel bad. yay.
It's a rough relationship, but she can handle it. It's why it works.
If you can't yeet something into the air do you really love it?
That's true Love ❤️
The fact that you are the only one doing these type of torture tests on recent/new AR releases is mind blowing.
He tortured it so hard, the ejection pattern went almost 3 o'clock towards the end. Before it was 1-2 o'clock ultra over gassed especially on a C buffer with old spring.😂
I carried a Colt M4 on both of my tours in Iraq and it was great. Never had any issues. It's a great workhorse gun. I even built a replica of the setup I carried for my personal collection I liked it so much. Including all the out-of-date "enhancements" I added to it and the same model of surefire which is also very much an antique as far as weapon light technology goes. I still love it though.
My duty gun now is a Mk18 derivative that uses the Geissele URGI handguard and is suppressed with a Surefire SOCOM can. It also runs reliably even after pushing it hard through my department's rifle course and running several thousand rounds through it. If anything it just runs better now.
My department's SWAT team uses the HUX WRX suppressors. They aren't bad, but I don't care for the flash they tend to throw because of the way they're made. They may produce less back pressure, but they aren't the best option if you're looking for a full signature reduction package.
I was issued an Mk 18 back in the GWOT and never had a problem with it. And that's swimming, sand, and mud ran just fine.
You must be special.
@@Lifechanging99999 Forces
Yeah right POG.
This channel always makes declare bankruptcy around Christmas. I think it’s because I spend more on guns than my wife or mortgage. 🤷🏻♂️
This is the kind of healthy relationship I'm trying to achieve. Thanks for leading the way, man.
I stay in bankruptcy lol.
"educated impulse investments" James
*To be fair*, I think any gun I've owned for over a couple of years hasn't really gone down in value. When they get discontinued, price goes through the roof. I think I paid $1k for that stupid Walther TPH.
I'm sorry
I worked for a company that sent you a rifle to demo , wouldn't fire or something like that is what was told to my old boss , he was so confused on why sent back with no review 🙂,I'm sure he was happy you didn't after watching the first DD torture test🙂. I love this channel and respect your opinion on high end firearms 🤘🏽
Probably Blackout Defense. Had some issues with that one, sent it back for a fix, never heard back. Glad to hear that there's someone who worked on the inside who knows that I don't take money or guns for good reviews - thanks for commenting.
@@tfbtv 🤘🏽🙂🤘🏽
@Joshua White to be fair, the guns seem to be very nice. The ammo we were using during the review was awful. The range we were testing at made us buy their reloads and it was some of the worst ammo I’ve ever used. Watch the original Daniel defense torture test I did, it was that same ammo. Almost a failure every Mag. However, of the five AR‘s that I brought to review, the Blackout was the only one that simply wouldn’t cycle the ammo. That indicates to me that it may have been perhaps under gassed for lighter felt recoil. I’m not mad at them about it. But I did send it back to them and they never followed up.
@@tfbtv ranges that require you use their ammo are already bogus, but when that ammo is shitty reloads, that range can eat a d!ck.
James going over the evolution of the M16 family of rifles
XM177: "Am I a joke to you?”
I am retired military, my mos. was armorer but I did not work much as a real live armorer, but I have been around MK-18 for years. I own a pistol MK-18 and cannot seem to make it fail. In my opinion they are one of the best on the market.
MK18 owner here,have a factory MK18 upper mated to a M16A1 lower.H3 buffer runs flawlessly.Lower owned since 1983, upper for 6 years now. Fantastic weapon. Upper was procured from sawsales in AZ from Ken Elmore.
I heard the "AR/M16's are unreliable " so much growing up in a quasi gun culture (mostly hunters and durpy fuds now that I think about it 🤔). Most, if not all, had never even seen an AR in person! Or maybe they did in Basic when they first entered service. I bought the myth, partly, and put off buying an AR until I saw a Colt (older) 6920 on sale for $700 and bought it with the idea of "I'm going to abuse the shit out this gun and see what its made of". Well, 5000 rounds of Russian bulk laquered ammo later (not in one session!) with only 1 light oiling, running that bitch in pouring rain, below freezing, blowing dust, mud, etc and I had only one issue that was soley ammo related.
I personally love posting the video that InRange did with their mud test on the AR and AK. Usually gets people going
My ARs have been the most reliable guns I have owned. I have personally had more malfunctions from my AK and my M1A.
I bought the bullshit until I was issued an M16A4. Ran the shit out of that bitch, and she just took it. Very quickly I realized I had been lied to. I hold the M16 in very high esteem as a damn fine service weapon. I bought a Colt 6960 when I got out of the Marines. She too runs like a God damn sowing machine, just goes and goes, without exception or excuse. I have an M1A. Got tired of it rattling loose and having parts fall off of it. Bought an Aero Precision AR10. Same thing. Cheap steel case, cold or hot, wet and dirty, in the rain the snow and the mud, chews it up, spits it out, asks for more. Loved it so much I bought another. So impressed with my ARs I haven't replaced my AK and my M1A just collects dust. My ARs have been more reliable, more accurate, more durable, easier to clean and maintain, easier to accessorize, easier to use, just better, functionally, in every single way. I have bolt guns and all sorts of other stuff, but from home defense to hunting, if it needs to work, any more, I just grab an AR.
@@Mr.Plight People get so mad when a gun they don't like works like a champ. It's priceless.
@@DevDog67 or when they love it and it fails
I got a FLOW 556k within a week or two of it being announced 😁. The manager of my range is a dealer and was able to snag 4, 2 for sale and 2 for demo, right away and I happened to be talking to him about the fact I had been looking at OSS. I can't stress how much more enjoyable it makes shooting a rifle...genuinely can't wait until I can just leave it on.
Got mine in ATF Jail last month, can't wait to get it next Spring hopefully!
I bought one too. Paperwork starting this week.
@Jesse Robinson what a coincidence! I also shot a mk18, first with a YHM K, then a 556K. The 556k was much better.
So it’s ok for the FBI to purchase a 3-D printed suppressor with our tax dollars but if I make my own, I’ll have to compromise myself into a tissue and eat grill cheese off the radiator for the next 20 years🤨
@@tfbtvdoes the lower matter?? I trying to build me an mk18
i carry a mk18 from DD for work, overseas, every day and love it. i have been for several years now, and have had zero issues, and zero complaints. if you want a reliable system, this is a one stop shot
insider info: Glock factory security carries them too.
@@tfbtv pity, i hoped they would use Steyr AUGs
*Note: need to keep redbull in my kit just in case my gun gets sleepy.
This is why I come here. For the top tier tactical advice!
Great video. Thank you!
Ryan was handling that fullauto recoil better than most of those swat dudes. Real shooters always shine.
Real shooters don't train on full auto.
@@eonsislept207 what a stupid comment.
I actually did a FOIA request for that dust test. The army ended up never send it to me even after one part of it was made releasable.
Reminds me of that USMC test I requested about the M38 DMR that once it got released it came with a cover sheet and that was it as apparently all testing was proprietary and super secret and 100% redacted
Seriously impressive and so is the audio quality in recording the echo. TFB always has great quality. Thanks for the content
I remember when DD did that torture test promo ten years back or so, dropping from helicopter, running it over , blowing it up. It not only sold me on Daniel defense but aimpoint as well.
Shot it with a shotgun and the aimpoint survived. Lol. I remember that.
Steyr did the same with the L9, pretty neat
Yep! I remember watching that video too. Why I started buying DD’s too lol. Love them
Love Larry Vickers, Legend
Should be a H2 buffer for either a 10.3" or 14.5" URG. I've been a SOCOM armorer for the last 8 yrs after retiring 24 ys in SF
Thank you!
I would assume the same applies to an 11.5"? What if someone uses a sprinco blue, would H2 still be used?
@@nicknuke7 Yes on the H2 as its a M4A1 buffer for the 11.5" URGI. I've never seen anyone replace their recoil spring in an issue gun. Standard USGI spring and H2 works. Remember they are all shooting MilSpec 5.56 loads
Would it make a difference if the 14.5 was carbine or mid length gas system?
@@warrenharrison9490 Nope, H2 buffer and standard USGI carbine recoil spring is still correct for a M4A1 lower with either 10.3" URG, 14.5" URG, 11.5" URGI or 14.5" URGI uppers. It works and works
James! We need a fair torture test, same phase, same elements, same procedures... for the most popular combat rifle, like scar, m4, mcx, x95, ak... will be amazing content !
Oh man, I'd love to but let me pull $20k of guns and ammo OUT OF MY ASS
@@tfbtv you can do a crowdfunding, is for all interest and entrainment! Could be a awesome series !!!!
I have three mongrel MK-18s using DD, Geissele, Colt and some other parts. They have so far been great and I love shooting them.
Great video. Loved seeing the testing and everyone getting training in.
I have both the MK18 and the Sig MCX Tacops, I can say that the Sig feels like it's made out of the same material as a Neutron Star and all that weight is in the front. Had to throw a heavy ass Optic on it just to counter balance the weight issues. I still love them both though!
But which do you love more?
"So what do you do for a living?" "I take the most well-known, high-end firearms on the market and chuck them as high in the air as I can. I get a bonus if they land in bayou water." Great content as always, love the channel!
So far this channel is the only
One to do it. Damn near every channel will throw a cheap PSA around, say it
Sucks and to buy some expensive gun butt then never follow up with the same kind of test on that gun.
0:28 "As an offering to the SOCOM Gods, I must yeet thee into the sun."
- James Reeves Esq (probably)
Would you ever consider doing a "Hurricane" defense weapon build?
I know many would instantly clutch an AR platform or a pump action boom tube, but I would like to see what you would come up with. Reason I ask is my home was destroyed during Hurricane Ian (Still waiting on the insurance to get off their asses while I sleep in a tent) and I had to deter a "visitor" who was walking around my home at 2AM on the 2nd night. I found myself grabbing a different weapon for outside work versus inside home clearing. Just a universal type weapon that could handle both indoors, outdoors, *moist* conditions, with daytime and night time functionality and not afraid of some serious debris. Telling you, it was Fallout level of fun the first two weeks! Glad to have decent internet back and able to watch your content. Stay safe!
Five of my six rifles utilize DD CHF barrels and their BCG, one being a DDV7 that has been chopped from 16" to 14.3" and paired with a G MK16, a DDM4A1, a DD MK18 with a G MK14 rail, and a DDV7SLW. I have put over 40k rounds through the six rifles, with the V7 having a round count of 12k+ rounds. I have experienced a total of three failures. One being blown primers using Frontier M193 in 2018 when they were having major issues with overcharged ammunition. The other being a failed spring in a c-products magazine that caused two double feeds in the M4A1. I have experienced 0 failures related to the weapons. I also drop tested the V7SLW after watching AK operators union say his rail was shifting. I dropped the gun from six feet onto frozen ground six times, 0 shift. I then chunked the rifle in the air several times, 0 shift. My best group was with the M4A1, 0.46 with Nosler 77 grain match. All rifles routinely produce MOA groups with any kind of decent match ammo, 1.5-2moa with IMI M193. People love to hate on DD, but will gladly pay substantially more for a boutique rifle with 0 real-world battle testing.
I feel like piston guns are more easily able to deal with gunk that gets in, but DI are more likely to keep gunk out. Videos of the mud tests from InRangeTV are a good example of that. Mud totally destroying an AK or piston ARs ability to function, while the DI AR didn't care
@Nathan that's the thing though. The 'DI' system in an AR15 already does it. The fact that you need to figure out a solution to keep it out of a piston gun in the first place is a weakness of those designs. As of now, seems like it's pretty hard to make a piston rifle that also keeps stuff out of it
Look up GarandThumbs test. They pushed a serious amount of mud into the the open dust cover of the rifles. The DI rifles were the only ones that ran 100% with flying colors. Not just 1 of them. ALL OF THEM! I couldn't believe it actually. It was nuts. Huge believer in DI after that. Plus DI is lighter with less recoil so there is that. I don't know if piston is truly better in sand and fine dust but with mud I can say with 100% certainty DI is superior.
That was awesome. Thanks for that. Great way to start my day.
Nice review ! Thank you TFBTV 💯
Thanks for the test! Cant wait to do none of this to my rifle
Great information and thank you for your time and hard work.
"...and some Red Bull, once." LOLOL I love you guys. Thanks for the review!
Absolutely killing it on that intro editing and music.
took a Gunsite (dusty AZ) week-long class with a DD Mk18 suppressed with a Saker K a few years back. didn't scrub the bore but disassembled and wiped down BCG parts every night. would get a little sluggish at the end of a day. the guys told me "the wetter the better" so kept it (over) lubed with gun oil. last day when going through the shoot house, click. execute failure drill, click. BCG was so gritty you could pullback and release the charging handle with no mag inserted, and the BCG would only go about halfway. yes, that's what a forward assist helps with, but it was FTF/FTE every round. that's when someone showed me TW25B grease. ran flawlessly rest of the day, and now every firearm I have gets a very VERY thin coat of TW25B on every friction surface after cleaning before being reassembled
EDIT: The Saker K was my first suppressor, and it is not flow-through which I'm sure is what contributed to a dirtier-than-usual chamber and BCG. I learned a lesson from that
I bought a DDMK18 upper back in 2016. $1250 I thought was a little steep at the time. Slapped it on a KAC lower and SBR'd it. Also running the RC2 suppressor. I haven't put it through a torture test, but I have ran the setup pretty hard for 6+ years and still haven't had a malfunction. Also this thing is friggin accurate! Yeah, DD is expensive, but you really get a "go to war" rifle that I would bet my life on. Just my .02
Man, I wish I had bought way more Wolf Gold .223 when it was cheap. Say what you want, that is quite decent ammo and it was like 20 cents a round there for a while. I've shot a lot of it and have never had an issue, and my guns shoot it quite accurately.
Very impressive. And to think this would theoretically be less reliable and durable than the Block II M4.
It's always nice to see a quality gun take a beating like a champ and keep on chugging cheap ammo! Love it!! Keep up the good work/play
Appreciate and enjoy your videos. Thanks for the info.
Something really oddly satisfying about watching him kick it into the trash. 😂😂
Thank you so much for actual sources. This is a fantastic video.
I love that you were just downtown doing this vid. Your bro rocks, BTW!
Looking at getting my first ar, contemplating the size of the barrel needed for the given application. This video was right on time.
A point that should be made: If other competitors beat the standard M4 it is likely largely due to the carbine length gas system. If I recall correctly if you switch to a mid-length gas system on a conventional AR-15 it doubles reliability and reduces wear on parts by 50% approx. So there is not actually anything wrong with the AR-15 and stoner system if put together in the right setup. Military Arms Channel has tested a BCM (I think) AR-15 and has shot over 12,000 rounds through it without cleaning or additional lube. Stoner/Sullivan's design is still the best imo.
Awesome content! For a system that has essentially been around for 50+ years, I wonder why it they feel the overwhelming need to find a “more reliable” one? What ever happened to “If it ain’t broke…”? If I were in charge, I would ask the folks who actually use the weapons if they need something better. And if so, let them build it. But that would probably make too much sense.
I agree. I did see in recent photos that DEVGRU is now back to DI 10.5s made by Noveske. Seems CAG is still rocking the 416 though
You usually can't carry enough ammo on person to have issues in most cases.
Great point
Very informative.
Excellent video.
What an awsome start to a video. Finally! God job.
Thank you Eugene
As usual, great content. If anyone wants to see how well their guns are built..... then they know who to send them to. He's gonna test drive the shit outta them!
Great transition from video to TFBTV logo @1:07
I love my Mk 18! People have talked shit about it for years to me saying it’s outdated and the “dwelltime bro”. People are really splitting hairs when it comes to guns. Every gun has a time and place it’s like a drill, versus an impact drill. Different tool, different job.
Thank you for another great video. I remember hearing a guy on a special forces team several years back say that Iraq he was using a SCAR (can’t remember if it was a light or heavy) and he was having so much trouble with it from the sand that he went back to his M4 because it performed better!
I have a DD MK18 and an LMT MRP 10.5 and both run like all hell! Love them!!
The M4 style rifle, with gas operating system is plenty reliable for any conceivable self defense need. Great review, just wish I had 1000 rounds for a day at the range, too.
Got an RIII a few weeks ago. So impressed that I'm thinking about cancelling my LWRC 10.5 build to get an RIII MK18.
Go for it! I guarantee you won’t be disappointed it’s a very high quality accurate and highly reliable platform. I currently have 2147 total rounds through my Mk18, it’s a very flat and smooth shooting firearm 😊
@@davidhunter9974 Picked up the LWRC and now in the process of getting the MK18
This is outstanding content!
Love that new DD RIS III rail! Pricey as all hell, but I still want one. Immediately..
Absolutely love my DD Mk18. Worth the $. Enjoyed the video and info. 👍
I’ve been really thinking about getting one. I have a V7 and PDW and I love those. Don’t really need a mk18 but I still want one. Almost got one for 1700 yesterday from GB. If I catch a good deal like that again I might not let it pass me by.
Thanks for the test just gives more confidence in my firearms
Fantastic test! I started my channel doing torture tests almost 10 years ago, people told me I was stupid and their gun would never get that dirty! Well real soldiers go through these crazy conditions for weeks at a time and their guns NEED to work!
All the issues I've ever had with the M4 were ammo related, either we got a bad batch of ammo where everyone's rifles were having issues or blanks in cold weather not cycling the action.
Excellent review,
What timing! Just about finished my Mk18 build.
Okay, you convinced me I need a DD MK18 NOW!!
USMC Infantry has been using the HK M27 for around a decade now. This was a very cool video!
Did this with my 10.5 Rosco.. but did 3800rnds the last 2k without lube all (but about 4 mags to see if it'd still run) suppressed then mud then sand. It also ran fine. But I ran an H2 and Blue sprinco the whole time. No issues at all. And a lot was also on a posty FA kac lower. The rifle is almost to 17k at this point.
Another great review by James. I Love my DD MK18. My favorite gun and would be the last one I'd ever surrender. Need to get the huxflow can.
Well said! Mk18 on my list now, not that it ever left 😂
Would have loved to see an IR laser/illuminator on there to see if the rail shifted.
Great video as always James!
As long as you keep up the maintenance, have good quality springs in it, replace worn out mags on time, the AR will do perfectly fine for anyone.
Love the Data point given. Good stuff supported by facts.
I love that whoever wrote the script somehow managed to ignore the XM177/Commando for the intro.
Part of what’s interesting to me about the shoot footage is how low you carry the stock in the pocket and how high the operators do. You get down on the gun - super good for short term engagements- while they sit the butt higher on the shoulder in a more relaxed, sustainable position.
But yeah, super fun footage and interesting results.
Question though: Do you zero your dots in that low-in-the-shoulder pocket orientation or more of a relaxed, up-high cheekweld? Asking for a friend.
Fun review. I have a 2016 MK18, originally with the .081 gas port, now .070. Close to 15,000 rounds; I’ve lost count. Much of it full auto, suppressed too, and abused. Takes a licking and keeps on ticking. It’s a rifle I will never part with!
@Ass Clapper I’m on my second barrel, but that’s only because I change the gas port size around 5000 rounds. As I frequently shoot full auto, I really don’t pay attention to the barrel anymore, there’s a good chance it’s shot out, but it’s just not a concern for the way I use the weapon. I would imagine the gas port opening is about the size of the Grand Canyon right now.
@Ass Clapper as a long range precision rifle, it is not. As a CQB rifle, precision accuracy isn’t important. It’s my favorite rifle! Well, one of my favorites.
Curious if you will have a more dedicated video to the HUXWRX/OSS flow 556k can coming soon, as I spied the Mk18 in a previous video, but didn't notice the can or flash hider on it. I'd say for the fact you guys were in a concrete echo chamber running whatever cheap and available ammo without flash retardant in it through a Mk18, it didn't sound or look too bad. Took some nice impacts to the muzzle end when trying to throw that thing into orbit, too, but looks like it didn't do much to hamper performance.
James, the only thing I love more than your videos, is the interactions in the comments section. Love it when creators take the time to read down here. 🍺
My god these things are damn tanks. I love my DDMK18 but this is the cherry on top. Surefire warcomp with eotech/vortex/Magpul furniture and it’s a dream come true.
This is easily my favorite AR platform in my safe.
Used the M4 and M16 and I liked them. My DD v7 is my go to rifle now that I'm a civilian again.
I wish more creators doing torture tests stated the type of lubricant being used and how the bcg was treated. There's some moly / tungsten plating lubricants out there that will greatly assist all moving parts under extreme circumstances. The poar bonding also can help with not allowing as much debris to actually stick to the treated points of the firearm. And then you have products like weaponshield that greatly counteract wear points at an insanely high level. Realistically though, you throw enough debris and much into a system then no product on earth can help with that...
Another great TFB-TV video. I really need to finish up my Mk18 clone. I plan to use the products suggested in the review.
A side note, anyone have the name, link, or source for the intro music on this video?
THIS is a reliability test. Every single rifle that has been chosen for any country's military is almost infinitely reliable on semi-auto. If you're not doing full auto in a reliability test then you aren't actually stressing the gun.
Love videos like this
Always forget you're over in Pensacola. I miss the hometown, man.
I think it's safe to say that firearms technology as it currently exists has peaked. And the only way to justify replacing the m4 would be if someone actually invented a new and more effective way of sending a projectile from a gun shaped object, which hasn't really happened yet.
I’ve ran thousands of rounds through the mk18 on call of duty with no failures.
mk18 tuesday. ill take it
great video
The Daniel Defense MK-18 is a superb weapon, especially the newest model. I'm saving bread away like a squirrel preparing for winter, to afford one!
They have stripped MK18 uppers on Brownells for under 700 if you use discount code SWEEPS
I thought it was Vickers that helped develop the HK piston gun because under the 14 or so inch barrel length, in certain circumstances (can't remember if it was OTB, or really cold, or ..) the DI system just was not sufficiently reliable, especially down at the 10.3" MK18 size. You would think the Team guys would stick with the MK18 since it was substantially lighter if they did not see an issue.
Got an Aimpoint Comp M4s on the way. Notice you had a Comp M4 on the rifle for the torture test where you were throwing it. Sweet...
This is like the first gun video like I actually could watch thanks for the video.
That testing gave me a heart attack, really enjoyed and good info, thanks.
You have to love the arm chair commandos like myself 😂I love the standard DI AR's 10.3"-20".
You guys shoot better than the SWAT guys. Great video!
I built 2 gas piston uppers, 1 CMMG the other an Adams. I have shot at least 10k through both of them. Needless to say, very limited maintenance on both since 2010. Not as fancy as LMT, POF or LWRC, but have performed pretty good.
My M4a1socoms have had 0 malfunctions,my Sgl21 had 4 failures,a mag was the culprit.That was since 2013 and I dont run them as hard you fellas ran yours but its good to know mine will probably run like those.
Used the M4A1 for a few years in the army. Never once had a malfunction that led to a round not firing on my weapon. Just do proper maintenance when needed.