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Thread: School me on 9mm ARs.

  1. #11
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    Quote Originally Posted by Wake27 View Post
    Why an AR vs one of the SMG options?


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    Same feel, I would imagine same manual of arms with LRBO. Biggest factor though was the Geiselle SD3G since that's what I have in my 5.56 AR, which from what I have read, hammer reset reliability is spotty at best.

    Thanks for all of the replies.
    I must study politics and war, that our sons may have liberty to study mathematics and philosophy. - John Adams

    The AK guys are all about the reach around. - Garand Thumb.

  2. #12
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    What specific upper receiver features do you need to run 9mm?

  3. #13
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    My current favorite is my AR-9 pistol build ... 8inch barrel with a NFA complete lower ... Did upgraded the trigger to a POF drop in trigger ....using a Kak shockwave pistol brace ... love it


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  4. #14
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    I see that relatively recently Colt added 9mm ar again to the line up. Used to have a colt sporter lightweight ( fixed handle a1 sights) that I enjoyed and was very reliable. How do these new models compare?

  5. #15
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    Not much different actually.......just the updated receiver.
    Proper Planing Prevents Piss Poor Performance.......

  6. #16
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    heres my old school Colt sporter, with some Magpul furniture tossed on. Have a form 1 pending and will get the barrel chopped to 10.5 in...anyone know if the receiver extension is different on the 9mms? That magpul stock was a tight fit on there, to the point it doesnt adjust easily..
    9mmcolt.JPG

  7. #17
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    Personally I would avoid Glock lowers, they are not designed for a sub gun and take a beating, would atleast want upgraded spring but Colt pattern mags are great and getting cheaper. Get Metalform or Brownells, don't waste your time on C Products.
    Having broken a couple bolt catches, do not skimp on buffer either. Get a heavy (8.5oz) buffer and good spring system. Ultimately I would suggest just getting a Colt, building can be finicky in terms of finding a fcg that works (apart from standard 9mm hammer) and bolt compatibility. I really want to try the JP bolt and recoil system to quiet down the twang when shooting suppressed, but at $400+ it's not worth the change over. If i was starting, i would look into it further.

    It will be heavy, but you can save some money and weight going the DDLES or Qtr Circle lowers as well.

  8. #18
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    what is your preferred barrel length for your ar9?
    i'm not sure either to go 10.5" or 14.5" (like my M4)
    i don't like the glock version because
    a) the bolt does not stay open when empty
    b) i don't want to mess around with my bolt carrier to make it work

  9. #19
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    Just get the 6951.... They work and there are still(at least as of a few years ago,) a handful of federal agencies using them.


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  10. #20
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    Nothing wrong with using a quality magwell adapter in a standard AR lower either. I see a lot of people going for dedicated lowers but there simply not required.

    The new Gear Head Works brace should be a nice addition for those with AR pistols



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    Last edited by wahoo95; 01-08-17 at 19:59.

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