Sg43 semi auto conversion

Discussion in 'DIY Projects' started by MachineHead, Dec 19, 2012.

  1. MachineHead

    MachineHead New Member

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    image-1615905918.jpg

    Has anyone ever rebuilt one of these. I used a mosin barrel in place of the original de-milled barrel and was able to achieve correct head space. Now I'm trying to figure out fire control group. Any input?
     
  2. danf_fl

    danf_fl Retired Supporter

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    I hope you have the paperwork in line.
     

  3. bluez

    bluez Well-Known Member

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    I am sure it wont be full auto :)
     
  4. orangello

    orangello New Member

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    Very cool! Keep us in pics of your progress as we root you on.



    (agreed on the paperwork)
     
  5. MachineHead

    MachineHead New Member

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    I understand your concer about paperwork trust me. I bought this parts kit from apex gun parts and it was in pieces. Re welded the receiver back together after the bolt was converted from open to closed (doing so makes it a legal semi auto) but there lies the problem. An open bolt gun (automatic) slams the bolt forward and causes it to fire. No hammer. So I'm thinking about taking a trigger group from either an ak47 or an ar15 and mounting it inside the receiver somehow to work like a traditional semi-auto. Wish me luck and I will post more pics when I have time to work on her
     
  6. orangello

    orangello New Member

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    Have you looked at how they convert the Sterling Pistol or the PPS to closed bolt? Might help. The PPS43c is the inexpensive semi-auto that is made in Poland but sold here (with welded wirestock).

    I could almost swear that the surplus bull barrels classicarms.something had for their Mosin Nagant sporter project product came off a machine gun with a 43 in the name. They looked reeeeeal nice; i never had the scratch or the time to get the package deal, but maybe you could find one from a failed project or another supplier through classicarms. If you need one in the future.
     
    Last edited: Dec 19, 2012
  7. MachineHead

    MachineHead New Member

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    I ended up just using an original mosin barrel I got from gun broker and machined it down to press fit inside the original barrel. It worked good then plug welded it for peace of mind. So now I have to machine a custom mount to hold the hammer seat and trigger from an ak then run linkage to the original trigger. I will post pics tonight that shows everything I have done so far.