Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. 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! Dead Air Armament XENO QD NOMAD MOUNT $13900 Original price was: $13900.$11895Current price is: $11895. Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7495 Original price was: $7495.$7135Current price is: $7135. Dead Air Armament SIG MOSQUITO THRD ADAPT 1/2X28 $4500 Sale! SilencerCo BRAVO ANCHOR BRAKE 458CAL BLK $9400 Original price was: $9400.$8606Current price is: $8606.