Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP You cannot add "Gemtech ADAPTER SIG MOSQUITO" to the cart because the product is out of stock. View cart “Savage Arms B22 22MAG BLK/WOOD 18″ THD” 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 45ACP.578X28 $7495 Original price was: $7495.$7135Current price is: $7135. Sale! Dead Air Armament XENO MOUNT MUZZLE BRAKE 5/8X24 $8900 Original price was: $8900.$8472Current price is: $8472. SilencerCo O-RING BOOSTER PACK $900 Gemtech THREAD PROTECTOR 1/2-28 RF $1800