Build Legality - Modification of Semi-Auto PPS-43. What I would like to do (professionally done of course, not me Bubba-ing) is chop off the end of the barrel and get it threaded and have an AK/SKS muzzle brake to bring it back to the full 16" length. Are there any legal issues I need to worry about for this other than 922 parts count (which if ... More @Wikipedia
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