224v

  1. Blue68f100

    Has anyone ever have brass not strech in a simi-auto AR-15?

    Back ground: I have a 224 Valkyrie that I built about a year ago. Shilen 1:7 twist, 28" SS blank, finished to 24", rifle length gas system. The reamer was a piloted Clymer that I special ordered. Did my own barrel machining and set the chamber up at min spec. Adjustable gas block to fine tune...
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