Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP View cart “SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24” 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! Dead Air Armament KEYMO FLASH HIDER M14X1LH $8900 $8472 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 $8715 Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 $8606 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135