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Thread: gas piston kits AA & ATI?

  1. #1
    Gunco Addicted for life j427x's Avatar
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    Postak gas piston kits AA & ATI?

    anybody running the AA or ATI gas piston retro kits?

    anything positive or negative about them?

    i have been thinking of converting one of my uppers over to a gas piston.

    no real reason other than the gas piston driven AR-15 is one of the few AR things i don't have--LOL

  2. #2
    Runco Gookie frankothebull's Avatar
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    i have the aa/ati piston on my 5.45 upper and love it, never had a single problem with it yet. bought it from copes for a great deal ($150 for the kit i think). the piston is supposedly self cleaning, and from what ive seen so far it is. no carbon/rust inside of it from that dirty surplus ammo. (that surplus stuff sure makes my eyes water after dumping a mag) my fav part about it is, if i forget to clean it as soon as i get home, the bolt isnt all covered in rusty grime. one thing im not too fond about is how the carrier sticks out of the upper when i take it apart. this is because of the spring you have to add behind the bolt. not as easy to close the upper and lower because of this.

  3. #3
    Gunco Addicted for life j427x's Avatar
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    Quote Originally Posted by frankothebull View Post
    i have the aa/ati piston on my 5.45 upper and love it, never had a single problem with it yet. bought it from copes for a great deal ($150 for the kit i think). the piston is supposedly self cleaning, and from what ive seen so far it is. no carbon/rust inside of it from that dirty surplus ammo. (that surplus stuff sure makes my eyes water after dumping a mag) my fav part about it is, if i forget to clean it as soon as i get home, the bolt isnt all covered in rusty grime. one thing im not too fond about is how the carrier sticks out of the upper when i take it apart. this is because of the spring you have to add behind the bolt. not as easy to close the upper and lower because of this.

    thanks--this is good info-- i didn't know they even had a spring behind the bolt--

  4. #4
    Gunco Member Patrick/GSA's Avatar
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    I'm getting two for my 7.5" 762x39 build and, maybe one for a super short AR.

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    3/6 Infantry mtdew's Avatar
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    I've been looking at the CMMG in Brownell's because it has a gas shut off for 22lr conversions. Anyone know any thing about them?
    AR-15/M16 GAS PISTON CONVERSION KIT - Brownells
    "NA BEAN DON CHAT GUN LAMHAINN"
    Clan MacPherson
    "CREAG DHUBH"!

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    3/6 Infantry mtdew's Avatar
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    I see the Adams Arms gas also can be shut off. Its not too much more than the CMMG.
    "NA BEAN DON CHAT GUN LAMHAINN"
    Clan MacPherson
    "CREAG DHUBH"!

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    Gunco Addicted for life j427x's Avatar
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    Quote Originally Posted by mtdew View Post
    I see the Adams Arms gas also can be shut off. Its not too much more than the CMMG.

    check with copes and CDNN

    cdnn has the pistol version for $130 IIRC---

    the rifle/middy/carbine versions run about $166 at copes and CDNN

  8. #8
    Gunco Veteran eldogg's Avatar
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    i still have the AA kit on my 7.62x39 AR. i wouldn't trade or sell it!
    "It does not take a majority to prevail ... but rather an irate, tireless minority, keen on setting brushfires of freedom in the minds of men." --Samuel Adams

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