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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"!

    "So stop bitchin' and start buildin'!

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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"!

    "So stop bitchin' and start buildin'!

  7. #7
    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

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    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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