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ar15 loose fit at pivot pin

Discussion in 'Rifle Discussion' started by Prestantia, Sep 4, 2012.

  1. Prestantia

    Prestantia Hillsboro, OR New Member

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    Hi everyone,
    I just finished an ar build, using an old colt upper for fun. Once I assembled it I found that there is a LOT of play between upper and lower. Not just a little but more like a whole 1/16" or more! After inspecting, i found that the pivot pin hole in the UPPER is oversized. I know that there are things that snug up the fit at the back of the receiver by the take down pin (accuwedge, etc.) but is there anything I can do to tighten up the fit at the pivot pin? Any help would be appreciated. Thanks!
     
  2. iamme

    iamme Lane County Well-Known Member

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    Sounds like a large pin colt upper.
     
  3. deadeye

    deadeye Albany,OR. Moderator Staff Member

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  4. DoubleTapDrew

    DoubleTapDrew Oregon Well-Known Member

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    +1 sounds like a big pin colt upper. There are adapters like deadeye posted to take care of the problem.
     
  5. Burt Gummer

    Burt Gummer Portland Completely Out of Ammo

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    Or get one of those KNS pins that you have to push a center button in order to remove ...