Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN FIXED MOUNT .578×28 View cart “SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24” 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 OBSIDIAN45 3 LUG ADAPT 9/16X24 $8500 $7561 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! Dead Air Armament KEYMO FLASH HIDER M14X1LH $8900 $8472 Gemtech THREAD PROTECTOR 1/2-28 RF $1800