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Patriot Defense | 9mm Barrel Reaming Service We utilize our Custom Match Throat Reamer to ensure we bring your short leade to an acceptable OAL length to allow a much greater range of projectile and OAL to be utilized. This service will greatly increase...

The Gun builders kit includes most of the necessary parts to build up your lower group except the commonly upgraded parts. Does not include Trigger Guard, Fire Control Group, and pistol grip. All parts meet or excede mil-spec