Dead Air Armament KeyMo Flash Hider, 1/2 x 28 RH, Black Finish DA301 New from Dead Air Silencers is the long awaited flash hider mount for the company's Sandman series of suppressors. Consumers demanded it and Dead Air listened. The flash hider has a unique patent pending design featuring mass shifted equal length tines. The end result is a flash hider that does not ping when used with Dead Air suppressors. The flash hider is backed by a lifetime warranty.