Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP View cart “Gemtech THREAD PROTECTOR 1/2-28 RF” 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! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 $8715 Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 $8351 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865