Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID MK23 You cannot add "SilencerCo 3-LUG MUZZLE DEVICE 9MM 1/2X36" to the cart because the product is out of stock. Gemtech PISTON GM-45 LID MK23$14800 Out of stock SKU: 12190 Category: Accessory-Silencer Accessories Product ID: 26720 Description Description GM-45/Blackside PistonFits HK Mk 23 Pistols Related products Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 Original price was: $6900.$6042Current price is: $6042. SilencerCo O-RING BOOSTER PACK $900 Sale! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 Original price was: $10000.$8715Current price is: $8715. Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100