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low mass bcg

  1. Low mass bolt carrier group - Better performance?

    AR Talk
    Hello, I was at a 3gun match today and won an RCA Low Mass 5.56×45(223) Competition BCG with fixed gas key similar to the one here: Low Mass 5.56×45(223) Competition BCG complete – Welcome to Rubber City Armory Has anyone here used this Fixed gas key BCG with a Fix Gas block in a carbine...
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