Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN PISTON .578X28 View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH” has been added to your cart. Sale! Rugged Suppressors OBSIDIAN PISTON .578X28$8000 $7196 Out of stock SKU: OP001 Category: Accessory-Silencer Accessories Product ID: 30006 Description Description 17-4 Stainless Steel Related products Sale! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 $8500 $8444 Sale! Rugged Suppressors TITANIUM FRONT CAP 7.62 $10000 $8715 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865