Home / Accessory-Silencer Accessories / CGS Group PISTON 1/2X36 BLACK You cannot add "Gemtech PISTON GM-45 LID MK23" to the cart because the product is out of stock. Sale! CGS Group PISTON 1/2X36 BLACK$5500 $5335 Out of stock SKU: CGS-KRK-1/2X36PISTBK Category: Accessory-Silencer Accessories Product ID: 29109 Description Description Fits Kraken/MOD9/Nautilus17-4PH Stainless Steel Related products Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042 Gemtech THREAD PROTECTOR 1/2-28 RF $1800 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211