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.45 super .450 smc

  1. 1911 Gunsmithing
    I just ordered a Wolff 22# Variable spring and heavy firing pin spring, as well as a Fusion full profile flat bottom FPS. Once I fully break in my Kimber(in another 100 rounds or so), I am going to install them. Planning on rounding the leading edge(as has been suggested) on the FPS. Anything...