Home / Accessory-Silencer Accessories / Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH View cart “Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28” has been added to your cart. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH$7495 $7135 Only 1 left in stock Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH quantity Add to cart SKU: YHM-3225-ML Category: Accessory-Silencer Accessories Product ID: 24698 Description Description 45 ACP Piston For Sidewinder Related products Gemtech THREAD PROTECTOR 1/2-28 RF $1800 Gemtech ADAPTER S&W M&P22C/22LR $6200 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 $8500 $8444 Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 $8351