Tone down gas to the face with suppressed SBR

[thisguy65]

Mods if in the wrong place please more, I place the thread here for more foot traffic.


Have my first SBR and while the gas is not bad I would like to improve it some how. I'm aware of Gemtech and Griffin's products but Gemtech works ti seems. I don't like having to take the bolt out to switch, but I understand why it's on that side.


I was thinking about a heavier buffer possible?


10.5" 300 blkout BA barrel.
762 sdn6 can
240smk
11.1 grains 1680 going 980-1040.

[Auto-X Fil]

SLR adjustable gas block. Set it so that the gun (barely) runs un-suppressed with the weakest ammo you have, and then you don't ever need to touch it again.

Also, either get a Gasbuster handle, or search for the RTV charging handle mod.

[Clint]

Gas face is dependent on bolt speed, port size gas system length and suppressor design.

Which buffer are you using and where are empties ejecting to?

How big is the gas port?

[Cmm46]

I have 2 11.5 5.56 guns that I shoot suppressed and left handed. One has an LMT enhanced carrier and its much more pleasant to shoot.

[RAM Engineer]

If you are left handed, none of the gas port, gas system, bolt magic or charging handles will work. The majority of it will come back down the bore and out the ejection port right into your face on every cycle of the bolt.

[thisguy65]

Gas face is dependent on bolt speed, port size gas system length and suppressor design.

Which buffer are you using and where are empties ejecting to?

How big is the gas port?

port size is .093 pistol length gas system 300blackout
about 4-430 I rekon

Heavier buffer slow the buffer down? I have a t2 spike in the parts bin


I have 2 11.5 5.56 guns that I shoot suppressed and left handed. One has an LMT enhanced carrier and its much more pleasant to shoot.

what buffer are you running?

[Dionysusigma]

Some ideas:

http://www.03designgroup.com/technotes/do-it-yourself-gas-buster-charging-handle

That, and a couple more ideas here: AR Gas Vent (https://www.ar15.com/archive/topic.html?b=6&f=20&t=434038) (TOS link)

[Cmm46]

what buffer are you running?[/QUOTE]

Vltor A5 H4

[JG007]

I have 2 11.5 5.56 guns that I shoot suppressed and left handed. One has an LMT enhanced carrier and its much more pleasant to shoot.

I have the same, two sbr's, still trying to figure out what if any difference i observe

[Clint]

Your reloads and gas port size both seem reasonable for use with an H2 buffer.

I'd swap that CAR for an H2.

Leave the other one in the bin.