Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP View cart “Gemtech GM9 THREAD REAR MOUNT M18X1RH” 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 WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211 Sale! Rugged Suppressors TITANIUM FRONT CAP 7.62 $10000 $8715