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Everything posted by Jethro1981

  1. New to forum! Not to AR's but I have a SIG M400 upper 11.0 inch with a micro gas block. How good are these? Should I replace with better? It has worked so far. Seams a little gasy but it works. I was about to change my handgaurd and I figured I'd do the gas block also? How hard are the to remove and replace? Thanks!
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