Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID USP 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 AAC (Advanced Armament) TI-RANT FRONT CAP TOOL $2499 Sale! Dead Air Armament XENO MOUNT FLASH HIDER 5/8X24 $8900 Original price was: $8900.$8472Current price is: $8472. Sale! SIG SAUER MUZZLE BRK CL 7.62MM 25 DEG $17999 Original price was: $17999.$16957Current price is: $16957. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7895 Original price was: $7895.$7188Current price is: $7188.