Most Reliable AR-15 Setup? Combat Gassing or Gamer Gassing.

I can attest to this, i tuned my 10.5 to soft when i got my can and it won’t cycle without the can. I turned my best rifle into an unreliable POS and ended up just dealing with a little extra gas to reliabilities sake.

I always thought a lot of people take that ejection pattern way too serious or misunderstand it altogether. It’s my understanding that the gassing chart was meant to help diagnose an issue with a problem rifle. If it barely dribbles the brass out then you should look for a loose gas block or gas loss somewhere else and too far forward maybe too large a gas port. But hey i could be wrong.

I run a S/A adjustable gas block on my suppressed 10.3, works great no issues and she is tuned and has a good ejection and hardly any gas blowback.

I have a few older Bushmasters that were very over gassed and I just put a Lantac dragon muzzle break,a full auto profile bolt carrier,cmc flat trigger and heavier spikes tungsten buffer and they run great with a perfect 4 o’clock ejection pattern! I haven’t gotten into suppressors yet but hope to soon!

Aero precision adj gas block…..
15 settings of problem solved

im all about good gassing. LMT, Daniel defense? fine with me. ill take reliability over being a baby any day

iS tHaT a MoCkInG bIrD

Great info and nice training video.

I'm still a fan of using known lower pressure loads such as PMC bronze in controlled environments as an analogue for how a hotter load in a less ideal environment may run the gun.
On that note, I found it surprising that a bcm 14.5mid with a vltor A5H4 with their steel rifle spring (not sprinco green) was still cycling .223 pressure pmc bronze, ejecting at 4 o clock (sprinco extractor and ejector springs) and locking back on empty even when the rifle is loosely held. Winchester 5.56 m193 was ejecting at mostly 3 and occasional 4. Stepped the weight down to A5H3 for a little extra leeway since my favorite federal fusion msr loads felt about as hot as pmc bronze, and ejected at 4 as well; for all I knew, federal fusion msr is as close to choking the gun as pmc bronze if stuff gets dirty, and there is no heavier A5 buffer weight to test the limits.
The A5H4 buffer lives in an 18" rifle gassed setup from white oak now since it still cycles pmc bronze the same way, but my preferred load for that is 5.56 pressure, and ejects at 3 o clock.
This is all unsuppressed mind you.
Vltor's A5 system is… quite something when it comes to tuning when I can get away with their heaviest ~7oz buffers like this.

What bcg do you have in your sbr?

I say clean your gun after every combat mission and or after every training and oil it back up y let your gun be dirty there is no point in it

is there a build list ? or a website to check, thanks !

If suppressed and unsuppressed use is desired a flow through can might be the best bet. Going to help parts durability, prevent the necessity of parts swaps to run either and minimize the sway between under and over gassing with the two setups

Love that NWU parka that snuck in at 2:28

Out there showing out for us chonky boys 🤘🏻🤘🏻🏴

Are you against using pmags?

Dude, way to get a subscribe in the first 3 minutes.

13.7 BA mid length with carbine spring and h2 buffer. Ejection at 4-4:30. Put a dead air sandman s on it with the 30cal cap, 3 o'clock. Runs like a dream. Very little gassing to the face with radian sd.

This is why I love DD. People always complain about them being overgassed. I reply stating that they’re not overgassed but rather combat gassed. They were made for adverse conditions not cleaned well lubed 70 degrees and sunny. Phenomenal video bro. Just subscribed.

What tan sling are u using on the rifle with the MOE stock ?thanks

vltor a5 with a5h2 buffer on a mk18 and an a5h1 and a bcm 14.5, beat the shit out of both of them, and they run great.

But I would go overgassed all day vs undergassed.

Dope video dude! subbed!

If you do the legwork you can properly gas an upper with a riflespeed gas block to work suppressed and unsuppressed in extreme cold and extreme heat temperatures. You just add another oil point that you maintain at the same intervals as your BCG. That’ll be my route with any serious use rifle. It also removes the gas tube blow out failure point that M4s had in overextended gunfights.

Your experiences pushed me not to down gas my sionics 11.5 with .070 port and also convinced me not to feel bad for getting a "cheap" turbo k. I still need to rtv my CH but I'm really happy how it runs with a vltor a5h2 and sprinco green. People need to stop trying to make "do work" guns be gamer guns.

I hate over gassed rifles but almost every company does it now. They seem like the company expects everyone to fire 2000 rounds of tula not clean there weapon and only do it in negative degree weather and thats why their gas port sizes are ridiculous large

Just built up an 18” for my grandpa, BA fluted spr profile with an a5 buffer system h2 green sprinco. Runs good and ejection pattern is uniform but I might need to open up the gas port a tad for when it gets down to freezing temps in winter.

I put five VLTOR A5 buffer systems on three DDs (V1 x 2 & M4A1) and two Colts (SOCOM & 6940) to mitigate some of the wear and tear on the internals and found the DDs' perceived recoil to be darn near that of a DD M4V5 mid-length…YMMV

This makes even more sense nowadays as modern suppressors shift to reduced back pressure designs. This mitigates a lot of the overblown gripes around recoil, ejection pattern, fouling, and wear.

BRT EZ tune gas tubes work phenomenal also

Nice video! What are your thoughts on flow through cans to help mitigate this issue?

This is the reason most militaries have gone to guns with gas options. You can run a quality adj bcg and have your cake and eat it to

When you buy a mk18 which is very reliable it’s always over gased

Keith, are you military? Also, where can I grab an L3Harris PEQ15 if I'm not military? I don't want the citizen version, BTW.

Man, I like your knowledge sharing, good job!

Also, I heard you say on one of your other videos that you live in NE Florida; not sure where, but I’d like to train with you if you provide classes. I’m much older than you, but I’ve been getting back into guns/training after being in motorcycle racing as a hobby. I’m an old jarhead from the 80’s (3/7) and most of my trading was Camp Pendleton, 29 Palms, Bridgeport and Okinawa. Sprinkle into deployments as well. I was a peace time Marine though. The one thing I did take from the Corps was to stay in shape though, so I think I might be able to keep up with you young bucks. Don’t know until I try. Anyway, let me know if you do any training or know places to go that aren’t too far away? Thanks.

I agree with your “formula.” I even run the h2 sprinco blue in sbr’s. Have never had premature wear or parts breakage on well over 15k rounds across multiple rifles.

I run MK18 SBR T2 direct thread H3 Red Sprinco. DDV7 H3 Red Sprinco TK. 🔥

Brass should be ejecting away from you. In a perfect world thats 3 oclock but in a dirty world that starts at 2 and trends back towards 3 over time. Most manufacturers of combat weapons know this but people still think there guns are over gassed as if they cant drill a smaller gas port to start with.

Not a big fan of tuning but also not a big fan of the AR barrels that were gassed to shoot Tula steel 10 years ago.

This is how I see it. Pick the lightest .223 stuff you shoot and get it to lock back on last round and eject at the 4. Now, the m16 was designed to throw brass at the 4 with m193, which is considered full 5.55 charge.

If you have a dedicated suppressor with a 4 o'clock no can, it should be good. Although if it's past the 230-3 without a suppresor eith m855/m193, then it's overgassed. Which a little overgassed never hurt anyone, but the bolt.

Clean and lube your gun and make sure it locks back with soft ammo. That's as reliable as you can ask from the platform. "Combat gas" is bullshit marketing term made by companies who don't want to warranty people using shit ammo and having stoppages. The "Combat gas" or the m16/m4 is a very soft shooting gun compared to many commercial offerings because they know minimum M855 is going to be shot through it. The ammo is half the battle when it comes to making the Ar-15 platform reliable.

I don't know if anyone caught this, but at the b roll in the end while one is moving the other is shooting. However as soon as the support by fire has to reload the maneuver element immediately stops and starts shooting. That's a professional move right there.
Good video and even better training man.

How many rounds you think has been through that YHM T2? How's it holding up?