Suppressed 300 BO with Vltor A5

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06-28-16, 19:45
drtywk

Suppressed 300 BO with Vltor A5

I am getting ready to build my first 300 BO upper that will be run suppressed full time. It will be a HD/range toy/varmit hunting upper. Right now, my plan is to use a 9" BCM 300 BO barrel and BCM gas block and my can is a Silencerco Omega. Has anyone run this upper combination with an A5 buffer system? How does it run with supers and subs? Which buffer are you having success with, A5H2/A5H3/A5H4? Is there anything I should know/change before I put the upper together?
06-29-16, 00:02
Ready.Fire.Aim

I have an AAC 12.5" barrel 300 blackout upper installed on a lower with an A5 buffer.

Runs great & cycles the action suppressed on my subsonic hand loads.
Silencer is an AAC 762SDN6
06-29-16, 00:31
fledge

8.25" V7 with A5 H2 and Omega. Adj gas block fully open. Runs great with supers and subs.
06-29-16, 05:12
themonk

For this use case I would suggest you look at the jp silent captured spring. Sounds like the goal of the rig is to be quiet and the JP makes a noticeable difference. I run one on my 9" AAC MPW and it is a very quiet and forgiving solution that runs any and everything I have thrown at it all 4 ways.
06-29-16, 07:12
CRAMBONE

Quote:

Originally Posted by themonk

jp silent captured spring. Sounds like the goal of the rig is to be quiet and the JP makes a noticeable difference.

Does anybody make a spring like that that will work with the PDW type stocks/receiver extensions?
06-29-16, 08:55
fledge

Quote:

Originally Posted by Jason0311

Does anybody make a spring like that that will work with the PDW type stocks/receiver extensions?

Maxim Defense uses a modified JP Spring in their PDW stock.

http://www.maximdefense.com/sell_sheet.pdf
06-29-16, 11:37
drtywk

Quote:

Originally Posted by themonk

For this use case I would suggest you look at the jp silent captured spring. Sounds like the goal of the rig is to be quiet and the JP makes a noticeable difference. I run one on my 9" AAC MPW and it is a very quiet and forgiving solution that runs any and everything I have thrown at it all 4 ways.

Are you running it in an A5 RE, and if so, which buffer have you had the most success with?
06-29-16, 12:42
themonk

Carbine
06-29-16, 13:21
drtywk

Standard or H2 SCP Assembly?
06-29-16, 16:38
themonk

JPSCS-AR15 - http://www.brownells.com/rifle-parts...prod53853.aspx
06-30-16, 04:17
tom12.7

I run the A5 with many 300 Blackout rifles. It can work well and the mass options allow a degree of tuning for preference.
07-01-16, 12:12
duece71

Tagged for interest......suppressed 300 blkout is my eventual goal. Subsonic hand loading too.
07-01-16, 17:13
tom12.7

Just for a reference, an AAC 9" and 12.5" will run with an A5H2 with a Colt rifle action spring in all 4 methods of operation. The KAC 9.5" and 11.5" are similar. If subs without a can are not your game, then the A5H3 can cover the other 3 for most. Many guys run this way or with carbine H3 actions. Supers only with a can may be able to run the A5H4 depending on the combination ammunition depending, just depends on the combination.