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aac ti-rant

  1. HK NFA TALK
    I recently finished collecting all the necessary parts for a USC - UMP conversion. Soon it will be shipped to Tom Bostic for the conversion. I want to suppress the gun after my paperwork clears and I have the barrel cut and threaded. Should I go 16 x 1 LH, or .578 x 28. I would really like...
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