Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN FIXED MOUNT .578×28 View cart “SIG SAUER FLASH HIDER CL 5.56MM 90 DEG” 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! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! SIG SAUER MUZZLE BRK CL 7.62MM 25 DEG $17999 $16957 Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100 Sale! Rugged Suppressors OBSIDIAN9 3 LUG ADAPT 13.5x1L $8500 $7561