Home / Accessory-Silencer Accessories / CGS Group PISTON 1/2X36 BLACK Sale! CGS Group PISTON 1/2X36 BLACK$5500 Original price was: $5500.$5335Current price is: $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 Gemtech THREAD PROTECTOR 1/2-28 RF $1800 SilencerCo O-RING BOOSTER PACK $900 Sale! Dead Air Armament GHOST FIXED MOUNT M13.5X1LH $8900 Original price was: $8900.$7865Current price is: $7865. Sale! Dead Air Armament KEYMO FLASH HIDER M14X1LH $8900 Original price was: $8900.$8472Current price is: $8472.