Home / Accessory-Silencer Accessories / SilencerCo PISTON 1/2X28 SN SOFT SHOULDER View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. Sale! SilencerCo PISTON 1/2X28 SN SOFT SHOULDER$8900 $8211 Out of stock SKU: AC1756 Category: Accessory-Silencer Accessories Product ID: 60085 Description Description 9mm Piston For Osprey/OctaneFits G43,M&P Shield, and P938Fits any Soft Shoulder Pistol Related products Gemtech ADAPTER MM9 FTM 1/2-28 $7500 Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 $8606 Gemtech THREAD PROTECTOR 1/2-28 RF $1800 SilencerCo DELTA 1/2X28 THREAD SPACER $1900