USC to UMP Conversion

Discussion in 'Rifle Discussion' started by littlegsxr, Dec 18, 2011.

  1. littlegsxr

    littlegsxr
    Below Canada.
    Active Member

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    Anybody do one? I am thinking of ordering a lower, so I am vested in the project. Cant do the build til my .300blk is done.
     

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