Home / Accessory-Silencer Accessories / CGS Group PISTON 1/2X28 BLACK View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. Sale! CGS Group PISTON 1/2X28 BLACK$5500 $5335 Out of stock SKU: CGS-KRK-1/2X28PISTBK Category: Accessory-Silencer Accessories Product ID: 32848 Description Description Fits Kraken/MOD9/Nautilus17-4PH Stainless Steel Related products Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 $8351 Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042 Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 $8606