The BLACKOUT® flash suppressor is the most efficient design available. The proprietary features eliminate muzzle flash, even on CQB-length barrels. The BLACKOUT® is inherently stronger and more impact resistant than four prong designs, while not being subject to the rapid erosion of closed-ended units. A high strength corrosion-resistant aerospace alloy, and ultra-hard Nitride finish provide the highest level of durability. Military tested and selected.
There are a few different options for 5/8x24, a deep and standard socket. Deep socket is for .75" barrels and smaller(profile behind the threads) and the standard socket fits all profiles and lastly the Blackout flash hider with no mount.