Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID 9/16-24 Gemtech PISTON GM-45 LID 9/16-24$14800 Out of stock SKU: 12187 Category: Accessory-Silencer Accessories Product ID: 31204 Description Description GM-45/Blackside Piston Related products Sale! SIG SAUER MUZZLE BRK CL 7.62MM 25 DEG $17999 $16957 Sale! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135 SilencerCo O-RING BOOSTER PACK $900