Dead Air's KeyMo Flash Hider both reduces visible muzzle flash, and also serves as a solid mounting interface for Dead Air's premium suppressors. Compatible suppressors include the Sandman-L, Sandman-S, and Sandman-K series, as well as KeyMo-equipped Nomad-30 and Primal suppressors. Flash hider bores are sized to the thread pitch: 1/2x28 is bored to .224 to meet the 5.56 requirement and 5/8x24 is bored to .30 cal.