Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP View cart “Rugged Suppressors R3 FLASH HIDER 3/4X24” has been added to your cart. Gemtech PISTON GM-45 LID USP$14800 Out of stock SKU: 12191 Category: Accessory-Silencer Accessories Product ID: 26717 Description Description GM-45/Blackside PistonFits HK USP 45 Pistols Related products Sale! Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 $7495 $7135 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042 Sale! Rugged Suppressors OBSIDIAN45 3 LUG ADAPT 9/16X24 $8500 $7561 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135