Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID MK23 View cart “Gemtech THREAD PROTECTOR 1/2-28 RF” has been added to your cart. 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 SilencerCo O-RING BOOSTER PACK $900 Sale! Dead Air Armament XENO QD NOMAD MOUNT $13900 $11895 Sale! SilencerCo BRAVO ANCHOR BRAKE 458CAL BLK $9400 $8606 Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100