Advanced Armament Corporation Piston - Ti-Rant 9M HD/ Ti-Rant 45 Conversion M13.5x 1 LH TPI Stainless Steel

Advanced Armament Corporation Piston - Ti-Rant 9M HD/ Ti-Rant 45 Conversion M13.5x 1 LH TPI Stainless Steel. All that is necessary to convert the silencer to be compatible with a different barrel thread pitch is to select the proper piston and replace the existing one residing in the rear of the sound suppressor. All AAC pistons are constructed of heat-treated stainless steel with a bead blasted matte finish and each is engraved to indicate the thread diameter thread pitch and direction of rotat