Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24 View cart “SilencerCo O-RING BOOSTER PACK” has been added to your cart. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24$7495 $7135 Only 1 left in stock Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24 quantity Add to cart SKU: YHM-3235-24 Category: Accessory-Silencer Accessories Product ID: 24701 Description Description 40 S&W Piston For Sidewinder Related products Sale! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 1/2X36 $8900 $8211 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211 Sale! Dead Air Armament KEYMO FLASH HIDER M14X1LH $8900 $8472