[ARCHIVED THREAD] - 300blk Buffer Question

Posted: 9/1/2015 12:49:20 AM EDT

9 inch ballistic advantage barrel with omega suppressor. Which buffer should I run? Thanks.

Posted: 9/1/2015 1:13:58 AM EDT

[#1]

Any standard mil spec buffer you want. It will run fine.

Posted: 9/1/2015 2:26:19 AM EDT

[#2]

Quote History

Quoted:
Any standard mil spec buffer you want. It will run fine.

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Sorry, I should have been more specific. Which buffer weight? Thanks.

Posted: 9/1/2015 9:07:47 AM EDT

[#3]

Adj Gas block should be a thought here -

Posted: 9/1/2015 11:44:09 AM EDT

[#4]

I run a standard carbine buffer and it does fine. I do think I need an adjustable gas block though because mine blows primers out every few rounds when suppressed.

Posted: 9/1/2015 2:56:41 PM EDT

[#5]

I have a standard carbine buffer (2.9oz) on a 9" barrel with suppressor and I can't get it to feed the next round. I have to manually pull the handle back to load the next round EVERY time.

so.... sub'd

Posted: 9/1/2015 5:45:29 PM EDT

[#6]

I've had great luck with an H2 buffer for a factory 12.5" barrel 300 blk AAC upper.

Posted: 9/1/2015 6:40:00 PM EDT

[#7]

The round was designed around an h2 buffer, but many people, including myself, use a spikes t2.

Posted: 9/1/2015 7:01:36 PM EDT

[#8]

16" AAC pistol length gas......................H3 buffer for both sub and super

Posted: 9/2/2015 12:55:57 PM EDT

[#9]

8.5 inch CMMG barrel. standard pistol gas system, H2 buffer flawless suppressed or non suppressed.

Posted: 9/2/2015 2:55:46 PM EDT

[#10]

This is my experience with running 300 blackout SBR's (mostly 8 inch barrels) so it might be different for you and others.

On piston builds I use only a carbine weight buffer (3.0 oz ) and mil spec spring. I have had an issue with H2 (4.7 oz) and H (3.8 oz) buffers on 300 blackout piston builds cycling subsonic rounds. I have had great success with the JP silent capture buffer with piston uppers. I highly recommend the JP silent capture! If you are going to only use a direct impingement upper , then things open up more to you. You can use everything from a carbine buffer (3.0 oz) upper to a H2 (4.7 oz). I would still only use a mil spec spring and avoid the heavy springs. With DI everything was fine on cycling with or without the can on my 8 inch SBR's. Stick with a pistol length gas system.

[ARCHIVED THREAD] - 300blk Buffer Question

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[ARCHIVED THREAD] - 300blk Buffer Question

[ARCHIVED THREAD] - 300blk Buffer Question