Keltec RFB Gas System Updates and Changes
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- Опубликовано: 23 июл 2024
- Brief overview of the Gas system changes in the Keltec RFB.
Trouble shooting help on using different ammo through this rifle and why you really should change the gas settings when making major changes in ammunition weight or from steel to brass.
How to Video from Keltec on how to initially set the gas system.-
** • Video **
0:41 Gen 1 vs Gen 2 RFB differences.
1:27 Pros and Cons of the RFB Gas System
3:25 How much room the bolt has in the Rifle
4:08 1 Result of a constantly over gassed system
7:05 What inspired me to do this video
7:27 What Ive seen as a common reason the RFB "doesn't work" in other videos. 
Развлечения
Thankfully a video of honest advice that isn’t immediately negative! Im beyond excited to get mine in a few days!
You getting a 24 or 18 inch?
OH new protip I just learned probably saved me alot of trouble when I got mine ..Clean off the lubrication from Keltec and apply your own on the Recoil spring and extractor arms..
Thanks for your awesome informative video. I was just looking at the Keltec RFB Hunter (24") today and it sparked my interest. I was looking for a Tavor 7 but here in Alberta, Canada they are hard to find, not to mention more expensive that the Keltec.
Oh awesome! I'm glad there was some useful info.
I imagine the Tavor7 isn't easy to find here either.Hasnt been out long.
So..how much is an Rfb vs a Tavor7 in Canada?
Last I heard the Rdb (556 keltec) was 1500
@@Odinforever2000 The RFB Hunter is $2300 and the Tavor 7 is $3000.. Those are both in 308. The RDB in 556 is around $1500.
@@BeagleTech ooff..I uh..well I wouldn't have an Rfb if it cost that much..Nor a Tavor7..Yikes..
I am hoping I can accuracy test an Mdr vs Rfb..
@@Odinforever2000 Yeah they are both expensive. I want to get one before our pathetic prime minister bans them lol.
@@BeagleTech Well then..I hope you get both at a great deal.Then post a video review of them :D
So ur video has been then the most helpful understanding that the previous owner was shooting brass where im shooting barnaul and may be under gased.. My question would be , would that cause light primer strikes??
Hard primers..
And light primer strikes happen from time to time.
But you should check or maybe order a new firing pin just in case its broken or damaged
outstanding common sense
I try sometimes
As I've been researching the RFB before buying I've found that the 18" black comes in two SKU: 640832003178 and 640832007381. After talking to a couple of vendors that carry both I was told that the one ending in 7381 is an "older version" without much additional detail. Do you have any idea if the difference in SKU indicates the transition from the two generation of gas systems? (i.e. the 3178 the Gen 2 and the 7381 is the Gen 1)
Gen 1 gas system hasn't been made since late 2011. If it's a new Rfb it's always a gen 2.
There has been changes to the coating of the bolt carrier from tiNi to black nitride.. Vendor/color change only,no difference in function.
So a little confused. The Pic in your video shows the gold nitride as Gen 2 and the black nitride as Gen 1 bolt. But the way you say it makes it sound like the black nitride is the Gen 2. Could you clarify please. I picked up my 18" RFB recently.
That was chrome in my Gen 1. It was just dirty it the photo..But its clearly chrome in the rest of the vid.
Black nitride is what newer gen 2 Rfb are using with the "gold"nitride being earlier Gen 2s..
Gen 2s also have a different gas block and a recoil spring that extends to the piston.
Basically only the Gen1s were chrome colored.
@@Odinforever2000 Awesome man, I appreciate the information. The information regarding the changes and diffences is hard to find. Thank you for your work.
Can someone explain the setting values? I keep seeing things like B+10 or B-20 and I cant find anywhere about what this means. I recently got a suppressor and upon putting it on my RFB its obviously overgassing like mad and double feeding so i need to figure this one out.
ruclips.net/video/PGdBtwXRSII/видео.html I tried to do that in this video. (I have both an over gassed and under gassed adjustment)
B = is the gas knobby screwed all the way in (Most gas to cycle the system)
+ (Insert Number) the number of kicks away from bottom or screwed in. (Higher this number the lower the amount of gas being used to cycle)
When using a traditional/baffle suppressor, Start with the gas knobby off.Then screw it in until the RFB locks back (1 round at a time in the magazine).
Thanks for the vid, newer owner myself. Any idea if the newest piston, 2.51 that u showed, is like the suppressor piston? Or should I still get the suppressor friendly piston
Actually it looks alot like the 2.0 piston minus the gas rings at the bottom
www.keltecweapons.com/product/rfb-suppressor-piston/
Supressors and 308 guns are a finicky bunch..I know "flow through" style suprrssors work on the Rfb..But thats about all I know about the supressor game with thr Rfb.
If you learn more..Throw up a vid plz.
@@Odinforever2000 thanks yeah, I don't have an oss can but Surefire is good about venting excess gas out the rear at the mount (muzzle Device)
I may give that can a go. My other option is the 30 SD by Griffin, and it looks made for the gun. But, it's more of a standard baffle design.
My Tavor is almost impossible to suppress without causing over gassed feeding issues but the Surefire can works fine with it. Unfortunately, the Surefire can is also louder but I guess you can't win em all.
@@Guardian2A Yea..Ive always heard about the trials and tribulations of suppressors..Maybe someday Ill go down that rabbit hole. :D Good luck and again..Id love to hear about what you encounter, working or not
@@Odinforever2000 Thanks noted, haven't made a video in a very long time
Is there a document with serial number ranges for each generation?
Most of the Gen 2s start around 1900 (Serial number TOKxx) from 9/2011- current. Just looking at the Ktog forum
Waiting for an opportunity to get out and adjust to Winchester 150 grain.
Yay! Should pew just fine.
Hello, I don't understand anything about my RFB, I use 147gr GGG from shoping but if I completely loosen the adjustment cap almost 45/50 clicks from full tightening (anti-clockwise) the RFB cycle anyway, is this normal ?? Another question, when the stopper is loosened by where the gases are evacuated, I do not see any correspondence between the housing of the piston and that of the adjustment pin ??
If you have any answers, thank you in advance very, very much ^^. Serge
What you describe is too much gas..
The idea is to turn down the gas in the gun to just above where it doesn't cycle (screwing it all the way in is almost no gas in the system.)
Unscrewing the adjustment cap is something you'd do if running a supressor on the Gen 1 Rfb .
I've got another video on how to set the gas in a later video
@@Odinforever2000 Ho man !! You mean if I remove the plug completely, I'm at maximum pressure in the barrel? I thought the opposite, I have a lot of trouble with my translators & with my RFB^^
(I hope I understood correctly this time :o) Anyway, thank you very much for your answers, I took fairground's potatoes in the shoulder (typical Fr exp :O).
ruclips.net/video/5eD_C8J8Fkc/видео.html Gasp!! sincerely sorry to bother you, but I no longer understand the explanations
@@sergemalak6417 ruclips.net/video/CtNk8syn1l8/видео.html
Set your gas like this. Your goal is to get it to run on the lowest setting possible.
I like the vid, would you recommend this rifle?
Thankyou!
Its my favorite bull pup 308 rifle...
Would I recommend?
Yes! Assuming you can get it for 1500 or less..and..
If you dont mind a Very adjustable gas system in your rifle.
Thanks for the video. I've had my 24 hunter for 3 years now, but my bolt carrier is not a the titanium bcg. *sighs*
What color is your bcg? Gold or Black?
@@Odinforever2000 mine is black. But i went on ktog and apparently people that sent in their gold ones got a black one back.
@@khoatran9482 Thats the Black Nitride coating. Its just what Keltec uses right now. Marks 1 of the many changes to the RFB
Awesome video, watched it more than once!
I own an RFB and have talked to different people on forums but my issue is that the gun always locks to the rear with 1 round in the magazine.
Doesn't matter if its 147gr to 180gr. I've sent an email to keltec with no reply. (I'll follow up) Do you have any recommendations? It is a Gen 2 and has cycled about 200 rounds.
The only time it has failed to feed is while using dusty FAL mags but with keltec mags, no issues. Minus that it doesn't matter if the gas is B+0 or B+~40. Any suggestions?
Did I talk to you on reddit?
Yea follow up with Keltec and/or contact Chad Enos (keltec rep) on Facebook. Hes on the Rfb and Rdb page the most.
Any updates on your rifle? Sounds like it needs to go back to Keltec (so far its about 10day turn around from what I'm hearing) Your rifle sounds out of spec
@@Odinforever2000 well, keltec emailed me back and told me to repeat some troubleshooting and since I already know the result I requested to send it back. That was about 2 weeks ago and haven't seen a follow up from keltec.
I'm worried that once they do get the gun that it will be years before I see it again if this is their response rate to emails.
@@Odinforever2000 lol probably. I'll look him up on FB and see if I can get some quicker email replies.
@@kevans2502 Email or call them for an update. The guys who have sent guns back on the Keltec facebook group are reporting short turnarounds.
If not contact Chad@KelTecWeapons.com and let him know you got a gun in and its issues. He will help ya out.
You have the gas adjustment backwards in this video as well. Please send me the manual you're reading from, it's clearly different from all the ones I have seen.
I have a second gen, titanium nitride treated bolt with 40 position gas system.
B+12 my gun does not lock back 147gr. Tightening it to b+10 as the manual dictates, tightening gas adjuster increases gas, it will then lock back. I'm not seeing how you're getting it backwards?
Do we agree the goal is to get the gun to fail to lock back and then go the opposite way to ensure reliable cycling?
Would you agree the rifle in my video is correctly calibrated for the ammunition its using?
Bottom (tightening) is closed. Opposite (loosening) opening the adjuster.
In my case My manual does state to start at B+10 then turn the knob clockwise to B+9 if its not locking open.
If our only disagreement is what is more or less gas Ill concede that because its not super clear in the manual which is which only the opening or closing of the adjuster.
@@Odinforever2000 I agree, the goal is to get the rifle to fail to lock back, and add the specified amount of gas the manual dictates (two click clockwise, tightening, increasing the gas) if you've been following the manual the way you described, then yes you have calibrated it correctly, most people calibrate it the way you do.
If you read what I just copy pasted straight from the manual, you'll see it says to tighten the adjuster clockwise (looking from the front of the gun) two clicks, increasing the gas to the correct amount.
Threading the adjuster in increases gas, unthreading the adjuster decreases gas.
@@Odinforever2000 bottomed out is not the gas closed off, but it closes the vent for the gas system. Bottomed out is the maximum amount of gas. The manual has you remove gas to a point that it should not lock open (b+10) then increase the gas one click clockwise (tightening) until it does lock back. Then tighten two more clicks for reliability sake, increasing gas.
@@Vike_12 page 25 in the manual says "To find the
optimum gas system setting, ensure that the gas restrictor cap is cool enough to touch, and
then turn it Clockwise until it is >>completely bottomed out and closed.
@@Odinforever2000 okay what you just copy pasted doesn't mean anything man, that's just to find the bottomed out position so that you can open the regulator 10 clicks. Bottomed out is not the starting point, you need to keep reading. Bottomed out is the reference point, to add 10 clicks.
I wonder if the gas system can be adjusted so it could cycle 200gr subsonic rounds?
I..dont know..I guess I could try that.. I cant get it to cycle the 10gr (Plastic) - 7.62x51 German Short Range Training Ammo..But..To be fair..Nothing I own can cycle that but my 91 Clone with a special bolt.
I do have a suppressor on the way so that would be an interesting test.
The rfb has a special suppressor piston for running subsonic ammo
@@Danjer510 sure..if you have a gen2 gas system (I do not) .
Do you have this piston and how well does it work?
So far I haven't had anyone who has that piston report good things
SO..I had a dumb thought...Why would you not just go with 300blk? More appropriate twist rate for subsonic heavy bullets.
Less wasted case space.
my wife loves to shoot this gun, with the gas settings done right it recoils like a .223 for her.
I mean..with the Right brake and tune..It does get pretty close..At least 6.5 Grendel levels (4.5lbs) of recoil :p
I really like shooting 110gr bullets for added recoil reduction :D
I love/hate my Kel-Tec RFB. Great innovation. Bad execution.
What was executed bad?