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gas port

  1. Problems
    Hey guys - I run an L (SBR'd) suppressed with a 10.5" .300 blk upper. Round count is around 3000 -- 1500 supersonic 150 gr. Fiocchi and 1500 subsonic of various brands & bullet weights. The can is an Silcencerco Omega 300 My gas setting was 2 or 3 and gun ran reliably for two years, but I began...