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Stiff Rear Takedown Pin

Discussion in 'Gunsmithing and Repairs' started by G11354, Sep 22, 2013.

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  1. G11354

    G11354 Member

    Joined:
    Nov 15, 2012
    Messages:
    167
    Location:
    Flint, Michigan
    Just finished Duracoating my AR and now my rear take down pin requires a punch for removal. Tried lightly sanding pin contact points with no luck.

    Also, the front of the upper receiver tilts upwards when the rear pin is inserted and is easier removed when the front pin is removed first.

    Any suggestions?
     
    Last edited: Sep 22, 2013
  2. rcmodel

    rcmodel Member in memoriam

    Joined:
    Sep 17, 2007
    Messages:
    59,082
    Location:
    Eastern KS
    You got paint somewhere it doesn't belong.

    Clean the upper & lower pin holes with a #40 (.098") drill bitt.

    Clean the paint off the pins.

    Then carefully look for contact points on the lower flats where the upper flats fit against them when the pins go in.

    rc
     
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