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lbr receiver

  1. LBR Receiver & USGI NM Barrel Installation

    Gunsmithing
    I am purchasing a LBR receiver and will be sending my NOS USGI bolt and barrel to them for installation. The barrel is marked MFG 26978 9345206 6-83 82472. It also has “NM” at the end of the muzzle and “P” towards the chamber. I think I have read most of the posts about NM barrels. It appears...
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