Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID MK23 View cart “Dead Air Armament SANDMAN 5.56 FRONT CAP” 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 Sale! SIG SAUER MUZZLE BRK CL 7.62MM 90 DEG $17999 $16957 Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7495 $7135 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 $8715