Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 View cart “Dead Air Armament WOLVERINE INSERT 15MM RH HK” 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 Gemtech ADAPTER S&W M&P22C/22LR $6200 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 $8500 $8444 Gemtech THREAD PROTECTOR 1/2-28 RF $1800