Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN PISTON M16X1 RH View cart “Gemtech THREAD PROTECTOR 1/2-28 RF” has been added to your cart. Sale! Rugged Suppressors OBSIDIAN PISTON M16X1 RH$8000 $7196 Out of stock SKU: OP005 Category: Accessory-Silencer Accessories Product ID: 30003 Description Description 17-4 Stainless Steel Related products Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135 SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28 $8500 $8444