Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID MK23 View cart “Gemtech GM9 THREAD REAR MOUNT M18X1RH” 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 FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! Rugged Suppressors OBSIDIAN9 3 LUG ADAPT 13.5x1L $8500 $7561 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135 SilencerCo DELTA 1/2X28 THREAD SPACER $1900