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  1. J

    Proof prefit headspace issue?

    So I just spun on a 6 dasher prefit from Proof onto a Lone Peak Fuzion. The go gauge passes, but the no go closes with zero resistance. Everything is new, clean, and the bolt fully disassembled. Gauges are from Manson and the barrel was torqued on at 80 ft/lbs as recommended by the guys at...
  2. J

    Rethread or thread adapter?

    All my cans and muzzle devices are surefire, so I want to stay in that family. Unfortunately, surefire doesn't make a 30 cal 3/4x24 muzzle device. So, my options are to rethread to 5/8x24 or get a thread adapter. I've never used an adapter so I don't know if they maintain concentricity or...