The HuxWrx Flash Hider QD is engineered to reduce muzzle flash when shooting unsuppressed featuring quick disconnect capability for seamless suppressor attachment with 5/8x24 threading.HuxWrx Flash Hider QD for 556NATO caliber5/8x24 thread pitch (does not work with 1/2x28 barrels)Quick disconnect design compatible with HX-QD and FLOW Series suppressorsAdds 1.7 inches to barrel lengthBlack finishSmaller-caliber mounts compatible with larger-caliber suppressorsPerfect for tactical applications and competitive shooting this flash hider provides effective flash suppression while maintaining compatibility with HuxWrx/OSS suppressor systems for versatile shooting configurations.