Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 You cannot add "Gemtech ADAPTER SIG MOSQUITO" to the cart because the product is out of stock. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28$7495 Original price was: $7495.$7135Current price is: $7135. Only 1 left in stock Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 quantity Add to cart SKU: YHM-3245-28 Category: Accessory-Silencer Accessories Product ID: 32170 Description Description 9mm Piston For Sidewinder Related products Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 Original price was: $7495.$7135Current price is: $7135. Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 Original price was: $8900.$7865Current price is: $7865. Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 Original price was: $6900.$6042Current price is: $6042. Dead Air Armament SIG MOSQUITO THRD ADAPT 1/2X28 $4500