Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN FIXED MOUNT .578×28 View cart “SilencerCo O-RING BOOSTER PACK” has been added to your cart. Sale! Rugged Suppressors OBSIDIAN FIXED MOUNT .578×28$8000 $7196 Out of stock SKU: OF007 Category: Accessory-Silencer Accessories Product ID: 30000 Description Description .578X28Designed for Fixed Barrels Related products Sale! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 $8715 Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 $8351 Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957