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    muzzle break pin

    I am trying to replace the muzzle break on a California MPA 930 (mini 11) and they spot welded it and pinned it. I removed the weld but how does one go about removing the pin? Any info will be much appreciated.
  2. D

    Threaded barrels in CA

    Hey guys, I purchased a CA legal MPA 930 mini MAC 11 and the muzzle break is spot welded. I would like to install a different break but don't want to attempt if there are no threads on the barrell. Does anyone have any info on these CA models?
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