Suppressing an AR pistol?

Discussion in 'Black Rifle Forum' started by Triple_L, Jun 6, 2020.

  1. Triple_L

    Triple_L

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    I have an AR pistol build, and I want to suppress it, I think.
    Few questions for those that have:
    Do I HAVE to run subsonic ammo, or can I run “regular” .223/5.56?
    How much DB reduction can I expect?
    I’m on the fence about this, so any insight is greatly appreciated!
     
  2. Tbags

    Tbags

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    Regular powered ammo should run fine, however it won't be hearing safe but will knockdown the db's considerably. Some suppressors have a suggested minimum barrel length. Be ready to have either an adjustable gas block, adjustable bcg or the need to play with buffer weights.

    I am about to go down this rabbit hole and am going to opt for a 30 caliber can so I will have choices on what I will be able to run it on.
     
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  3. Jack Black

    Jack Black

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    You'll run regular ammo in .223/5.56. Subsonic .223/5.56 is virtually unheard of because it's not known to reliably cycle. It exists, but it's rare.
     
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  4. Chowser

    Chowser

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    I have an AR pistol 11.5" and SBR 10.5" in 5.56. Suppressed for both. Sounds like crap still. Hurts. Gave up. I moved the suppressor to my work rifle (10.5" select-fire SBR). It's loud but hey, it knocks the sound down a little.

    Now I suppress my 6" (pistol) and 9" (SBR) 300blk and it's all better now.
     
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  5. Triple_L

    Triple_L

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    That is what is coming up everywhere that I read; it’s still very loud even when suppressed.

     
  6. -JCN-

    -JCN-

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    Subsonic 223 would wind up being the power of a 380ACP with the kind of weight bullets they’d use....

    A suppressor on a 16” 223 brings it down from 160dB to around 140dB.

    On a 223 pistol it’d be louder.

    You might as well get a 300BLK pistol barrel. THAT one is super quiet subsonic.
     
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  7. Tyler Smith

    Tyler Smith

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    23D4E121-FCEF-4FFF-A6DB-B9C8BB73DF78.jpeg D784F9A3-2730-4BD1-810E-CA4B0D8BAA67.jpeg

    10.5” aero build runs like a sewing machine
     
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  8. Triple_L

    Triple_L

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  9. Tyler Smith

    Tyler Smith

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    Ate it just fine. I did add an adjustable gas block. Carbine gas system on my build it was over gassed so I just slapped a gas block on and recently just put a h2 buffer in the gun but it ran fine with the normal carbine buffer
     
  10. jcullen

    jcullen

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    Forget it, ain't worth the trouble, and ATF is close to a year, I just canned the whole idea..
     
  11. Tyler Smith

    Tyler Smith

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    Weird I just got another can in 6 months it was done in 5 but i was out of state for a month so couldn’t pick it up. They are seeing them come back way sooner now through my shop I use
     
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