HUXWRX Safety Company Flash Hider-QD, 223 Remington/556NATO, Black, M24X1.5 RH, Fits HuxWrx/OSS Suppressors 1914 The Flash Hider-QD is designed to mitigate flash with unsuppressed. NOTE: Larger caliber mounts are NOT compatible with smaller caliber suppressors. Smaller caliber mounts ARE compatible with larger caliber suppressors.