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Type: Posts; User: Old Ironside; Excluded Forums: Milsurp Knowledge Libraries (READ ONLY)

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  1. Replies
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    Thanks for the schematic Snafu. the piston is...

    Thanks for the schematic Snafu. the piston is half way across the front row of gas port when the bolt is fully forward. The gun is a rebuilt gun. The upper receiver was not cut up, and I scrounged...
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    6
    Views
    879

    MK 1 Cycling issues

    Good morning, I'm working on a semi auto Mk1 right now and i'm having cycling issues. the gun will not cycle back after it fires.
    - the gun is a mk1 upper receiver mounted on a mk2 lower
    - I'm...
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