Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 View cart “Gemtech ADAPTER S&W M&P22C/22LR” has been added to your cart. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28$7495 Original price was: $7495.$7135Current price is: $7135. Only 1 left in stock Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 quantity Add to cart SKU: YHM-3225-28 Category: Accessory-Silencer Accessories Product ID: 24695 Description Description 45 ACP Piston For Sidewinder Related products Sale! Dead Air Armament GHOST FIXED MOUNT M13.5X1LH $8900 Original price was: $8900.$7865Current price is: $7865. Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 Original price was: $8900.$8351Current price is: $8351. Sale! Dead Air Armament XENO QD NOMAD MOUNT $13900 Original price was: $13900.$11895Current price is: $11895. Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 Original price was: $10000.$8715Current price is: $8715.