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suppressed AR Pistons - is there still a significant blast from the piston?

Discussion in 'NFA Firearms and Accessories' started by LRS_Ranger, Apr 24, 2010.

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  1. LRS_Ranger

    LRS_Ranger Member

    Jan 31, 2010
    Molalla, OR
    Please tell me if this has been asked before. My question is will I still get a significant amount of blast and noise from the piston even with a can? I have an LWRC M6A2 that I would like to put a surefire can on. Is this a real issue or am I just inventing problems in my head? (Anybody recommend a certain type/brand of can? We were issued Gemtech's and I wasn't totally impressed.) Thanks all!
  2. crushbup

    crushbup Member

    Mar 11, 2008
    Basically, piston systems will vent gas out away from you at the front sight block. This does give a bit more noise, however the tradeoff is that the gas doesn't fly right at your face.

    Surefires are generally not the quietest can in town, especially for their price range. I would look at an Ops Inc, Elite Iron, or AAC can.


    If you can, try and get your can through Major Malfunction: http://www.major-malfunction.com/maj_malf_5u_013.htm

    He often has the best prices, and always has great service.
  3. Zak Smith

    Zak Smith Moderator Emeritus

    Dec 24, 2002
    Fort Collins, CO, USA.
    A significant portion of the gas that comes out the rear of a suppressed AR-15 comes through the bore itself and out the breach. If you shoot a bunch of suppressed rounds and then eject the chambered one, it will be covered in soot from the bore backpressure, and you can often see gas streaming out the bottom of the magazine-- this is from coming back through the barrel, not the gas tube (as this path is more or less sealed).
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