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My AR pistol build

Discussion in 'Handgun Discussion' started by BigCat, Dec 5, 2014.

  1. BigCat

    BigCat Portland Member

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    Started collecting parts for an AR pistol, chambered in 7.62x39. Starting this thread to share my build, but mainly to help me keep things organized;)

    Both my lower and my upper receiver are from Anderson Manufacturing.

    The lower receiver will be stuffed with a Colt lower parts kit and Geissele Super Dynamic 3 Gun trigger.

    The upper receiver has no dust cover or forward assist. It will be holding a bolt carrier group from KAK Industries that has been modified to excel with steel cased ammo.

    The barrel is an 8" long, KAK Industries 7.62x39, and will have the KAK slimline flash can on the end. Low profile gas block.

    The buffer tube is also made by KAK Industries. It comes with spacers, which is perfect for adjusting the Sig Sauer brace.

    I'm still reviewing and measuring for a handguard, but I'm leaning towards the Midwest Industries Gen 2 SS. It should match the slimline flash can well.

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    Focer, oli700, Benny503 and 1 other person like this.
  2. jrprich

    jrprich PNW Well-Known Member

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    Looks like it will be a great pistol :)
     
  3. BigCat

    BigCat Portland Member

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    Thanks. I'll update with more pictures over the weekend.
     
  4. edison bulb

    edison bulb Portland, OR Well-Known Member

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    This is great! I'm thinking about an AR Pistol. I'll be watching this thread :)
     
  5. iamme

    iamme Lane County Well-Known Member

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    Nice build. But as much as I love the sd3g- id go with the enhanced on a pistol build.
     
  6. BigCat

    BigCat Portland Member

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    I wanted a single stage trigger.
     
  7. BigCat

    BigCat Portland Member

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    Thanks.
     
  8. Benny503

    Benny503 Grants Pass Well-Known Member

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    What mags are you going to run this with?
     
  9. BigCat

    BigCat Portland Member

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    Still researching that. Any tips?
     
  10. Benny503

    Benny503 Grants Pass Well-Known Member

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    I have a few ar that shoot 7.62x39 use AK mags. I have not try any ar mag yet so still searching for the best :) praying magpul will make one that works.
     
  11. Benny503

    Benny503 Grants Pass Well-Known Member

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    Any update on the mags? I am about to built one with A-Team lower and The PWS MK107 Upper 7" that they are on sale at OCG. I am waiting for the good mags just like you.
     
  12. oli700

    oli700 Rogue Valley Well-Known Member

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    nice, I jumped on the Sig brace bandwagon as well

    good luck with the caliber, I never met a X39 AR that ran right yet but I think they exist
     
  13. Benny503

    Benny503 Grants Pass Well-Known Member

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    Ar 7.62x39 was a problem child, but if you take your name times and many trips to the range then it would be fix. It is currently my best suppressor host. My previous experience first was on a Special Weapon AR47. It took regular AK mag, so the upper need to be machine wider so the AK mags can fit the upper and get catch in the lower magazine release. Then it only shoot yugo brAss case amo, lucky me I bought lot of pmc ammo back in the day, $5 for 20 rounds so I did not have to clean them every trip to the range. The yugo ammo, is corrosion ammo. Then I decide to shoot cheap steel case ammo. I have to file the disk of the firing pin lot of times, little as each time. I put the firing pin into my hand drill and made it spins. Took a nails file rub on it just a little each time. Put the rifle back, run to BLM land fire couple mags (repeated this, step 5-8 times). It did this 5 or 6 time then the firing pin come to a perfect spot it stop fail to fire.
    Because it is suppressed so well I ordered 2 of the, RRA LAR47 Delta model. Praying they come to me soon. Mean while I am trying to built one while waiting.
     
    Last edited: Dec 10, 2014
  14. Benny503

    Benny503 Grants Pass Well-Known Member

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    BTW I am running all my AKs, Sigs 7.62x39, AR47 with pmag AK47 magazines they all work well. The only AR pistol that, does not work with magpul mag is MGI Verpra 7.62x39 pistol.
     
  15. oli700

    oli700 Rogue Valley Well-Known Member

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    any broken lugs Benny ?
     
  16. Benny503

    Benny503 Grants Pass Well-Known Member

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    Oh yeah, thanks for asking. I forget about the broken bolt. After few full mags of mix Russian ammo I had a fail to fire and fail to eject. I did check the bolt and this is what happen
    :s0118:
    20141005_201858.jpg 20141005_201858.jpg 20141005_201742.jpg

    Then I bought the bolt and firing pin from MGI. So far it works well.

    20141104_182231.jpg
     
  17. BigCat

    BigCat Portland Member

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    You're saying that AK47 Pmags will work in the AR platform?
     
  18. Benny503

    Benny503 Grants Pass Well-Known Member

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    The AR rifles I have accept AK mags. I will post some picture once I get home.
     
  19. BigCat

    BigCat Portland Member

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    Updates on the build. Got the lower put together.

    Anderson Manufacturing lower receiver.
    Colt parts kit.
    Geissele trigger.
    KAK industries buffer tube.
    Sig Sauer brace.

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    oli700 and Benny503 like this.
  20. BigCat

    BigCat Portland Member

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    Mock up.

    B138CD20-7EC4-4121-8ED5-7B233B1780E8.jpg
     
    Stomper likes this.