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Thread: 7.62x25 AK Conversion

  1. #1
    GuncoHolic Rahatlakhoom's Avatar
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    Default 7.62x25 AK Conversion

    My first attempt at the AK pistol caliber conversion.
    This one is 7.62 x 25, Using the old Bulgarian 50's surplus.
    It does operate well. I do have the occassional hang-up.
    But, overall, it shits-and-gets. This is blow-back operated.
    I used a bunch of left over parts. Threw in an FAL FSB

    The head of an AK gas piston serves as a charging handle.

    The magwell and mag is a PPS-43.



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    Gunco Member azhonkey's Avatar
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    nice job Rah,that's a good lookin build.my 7.62x25 carbine is one of my favorite guns to shoot.about the only cheap ammo left.

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    Gunco Veteran patjsimpson's Avatar
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    This is awesome... And something that I really want to build at some point. I have all the parts just need the time. ;-)
    Can you post pictures of the Bolt and carrier, Pictures from the top looking down into the chamber.

    If it is not appropriate for this forum could you post it in the caliber conversons forum?

    I am currently on the fence about blow back vs gas operated at the moment.

    Yours is beautiful, Great Job!
    Pat

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    No Hope For Me Coils's Avatar
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    Nice build.
    Yeah share some more details, I know others have been built but info is info.
    The head of an AK gas piston serves as a charging handle.
    I also like this, that's a great idea.

  5. #5
    Gunco Member SW44's Avatar
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    Nice looking rifle!

    What did you use for the barrel?

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    GuncoHolic Rahatlakhoom's Avatar
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    Got some close ups of detail.
    I set the magwell at a shallower angle than the pps43.
    This made the feeding more difficult and I had to work and rework the
    feedramp. Why I did this was because I wasn't paying attention.
    I had welded it in before I caught it. Duh!



    No need for the AK magcatch. I mig'ed the assemblies onto the
    tapco style flat. Low to Medium settings with .024" wire, w/gas.




    Charging handle was a cheap ornament, it does work nice.



    This was a spare parts build. That's an FAL fsb with an auto lugnut
    capping off the front. AR style flash hider.



    Yugo top cover, pps43 mag, The bolt is sleeved to accept the 7.62 x 25,
    although diameter is the same for 9mm also. The gas piston is used
    as a guide. Bolt is welded forward in a fixed position. Make sure and
    get the bolt aligned correctly as it feeds the chamber before welding.
    There is so much slop in the bolt that if you weld it in, it could be off
    and jamb the round. I found out the hard way. I had to break the welds
    and recenter the bolt so it fed easily. Use metal shims to pin it in alignment
    first before welding.

    Also I found, the bottom part of the bolt needed ground
    away enough to clear mag ears. No two of these kinds of builds are
    going to be the same.



    Internals. You can faintly see the huge welded blob that I fashioned
    into a feed ramp. The fcg is a tapco g2. I am getting considerable
    trigger slap and need to work it out.





    I broke open a can of the Romanian Tok ammo, 80's production.
    This stuff is incredibly hot. The blow back is outrageous.
    A number of cases were split near the neck. I don't think it presents
    a danger. I was getting some split necks with the 50's bulgarian also.
    Blow back is plenty dirty, the receiver interior will get sooty after
    a couple of mags. I spray it down with strong ammonia solution
    cause this surplus ammo is corrosive.

    A red-dot heads up is real nice with this sort of plinker.
    This gun is a blast to shoot close range. 25-50 yds.
    This Tok round is smokin' coming out of a 16" barrel.

    Quote Originally Posted by SW44 View Post
    Nice looking rifle!

    What did you use for the barrel?
    I picked it up from the WTS forum. I had to turn it down for the fittings,
    but this can be a 7.62 blank, get the correct chamber reamer and good to go.




    Last edited by Rahatlakhoom; 04-14-2009 at 10:47 AM.
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    Gunco Veteran patjsimpson's Avatar
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    Great pictures, Did you have to remove any of the body of the bolt carrier to get the weight down? also since the bolt is fixed and moved forward did you have to remove the Lugs on the trunnion and weld in a bolt stop? These are some of the things I have heard people have done in the past so I am curious if it is all necessary.
    thx again for sharing!
    pat

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    Gunco Veteran [486]'s Avatar
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    Quote Originally Posted by Rahatlakhoom View Post
    I broke open a can of the Romanian Tok ammo, 80's production.
    This stuff is incredibly hot. The blow back is outrageous.
    A number of cases were split near the neck. I don't think it presents
    a danger.
    You might wanna press some lead round bar stock into the 2 smaller diameter holes in the back of the bolt carrier that seem to do nothing, if you did that to the point where the lighter ammo still cycled, but the hotter stuff had more bolt weight to go against...

  9. #9
    GuncoHolic Rahatlakhoom's Avatar
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    I didn't remove any metal from the bolt carrier.
    I wanted to test it first, then decide. It works as is,
    in fact may be a bit light with hotter ammo. A stronger recoil
    spring may also help.

    No trunnion alterations needed for this config.
    You do need to install a bolt block because the bolt will not
    lock backwards as a typical AKM. Install this after the bolt is welded
    forward in carrier. You can see it in this pic just behind the serial #'s
    on the trunnion.

    It's not horribly complicated. Thanks.











    Quote Originally Posted by patjsimpson View Post
    Great pictures, Did you have to remove any of the body of the bolt carrier to get the weight down? also since the bolt is fixed and moved forward did you have to remove the Lugs on the trunnion and weld in a bolt stop? These are some of the things I have heard people have done in the past so I am curious if it is all necessary.
    thx again for sharing!
    pat
    Charter member-Busted Box Club est. 2006

    "I will adhere to the Patriot Act, the one signed in 1776"
    - Marc Anderson

  10. #10
    aka: SDK1968 dutigaf's Avatar
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    im very interested in your version of this as im always a x25 tok fan...

    so what mods DID you do to the bolt? that seems to be the big difference in most of these builds.

    and what did your donor barrel come from?

    i'll go reread this in case i just glossed over it.

    thanks

    sean
    say what you mean & mean what you say


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