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Thread: Muzzle Break for 9mm

  1. #1
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    Muzzle Break for 9mm

    I am looking for a muzzle break for a 9mm PCC 16 inch barrel. What do you reccomend?
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  2. #2
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    I'm putting the finishing touches on a 9mm carbine myself, be interesting to see what people recommend.

    Personally, I am just looking for a A2 birdcage as I don't think that after 16" of barrel there will be enough muzzle pressure to do anything, but maybe I am wrong?

  3. #3
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    A 9mm brake seems excessive, like putting a spoiler on a lawn mower. Maybe if it's intended to be used with a suppressor, it'd be fine, but most 9mm suppressors seem to be 1/2x28 as it is...
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    Silencerco may have an option for use with their Hybrid. I know they make a flash suppressor for it at least. I don't know of any other non 3-lug QD pistol can manufacturers. Does anyone know of a reason you shouldn't have a regular .223 version bored to say .400 or so and just use whatever you prefer, as it is really just for aesthetic/thread protection anyways?

    ETA: There are 9mm versions of the A2 Birdcage, comes on the colt 9mm.
    Last edited by medicman816; 12-20-17 at 16:39.

  6. #6
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    All a brake will do is direct more noise back to the shooter. I mean, I guess if you just want it to seem louder knock yourself out. I would recommend a 9mm A2. Myself, I run a 3 lug, i don't feel the need for anything else on the rare occasion I run it without a can.
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  7. #7
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    I have the A2 type, came on the upper. I was just wondering if there was a brake that would do more.
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  8. #8
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    I know one reason some people have is to divert a bit of sound back for timers to more readily pick up shots. I have seen PCCs in USPSA play a bit better with timers when there is some sort of brake/comp on the end.

  9. #9
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    There really isn't much of a selection to choose from for AR9 short of having a smith ream out the opening. The brakes that are avalible are all UGLY. Also, there is the issue with 9mm berrel thread pitch, most are 1/2 x 36, some are 1/2 x 28. Most brakes are made for 556 and 762.

    I am one that wanted to put a different flash hider (AAC Blackout) on just for looks/cool factor. After some research it was more trouble than it's worth. Guess I am stuck with the A1. Not really complaining though.
    Last edited by Ridgeline; 12-30-17 at 19:59.

  10. #10
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    Google “9mm AR parts”....... there are choices if ya just gotta look kewl.

    There is not enough gas to justify the need for a comp or a brake on a 9mm
    Proper Planing Prevents Piss Poor Performance.......

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