Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN PISTON .578X28 View cart “SilencerCo DELTA 1/2X28 THREAD SPACER” 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! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 $8715 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135