Product Description
Product Features & Specifications Jk Armament JK155PISTON5X28 Piston 9mmLuger 1/2"x28 Stainless Steel For Pistol Precision machined from 17-4 PH stainless steel, JKs booster piston is the component that screws onto the threaded pistol barrel, mating suppressor and pistol together.The pistons are