Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 View cart “SIG SAUER FLASH HIDER CL 5.56MM 90 DEG” has been added to your cart. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28$7495 $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 SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! Rugged Suppressors TITANIUM FRONT CAP 7.62 $10000 $8715 Sale! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! Rugged Suppressors OBSIDIAN45 3 LUG ADAPT 9/16X24 $8500 $7561