The SRD762 QD is a Stainless Steel/Nickel alloy based silencer that use QD (Quick Disconnect) muzzle devices to attach the silencer to the rifle. Stainless/Nickel alloy silencers provide the highest level of durability, particularly with Short Barreled hosts using SuperSonic ammunition. The 7.62mm QD muzzle device system is available in 5/8-24tpi threads match the vast majority of modern sporting rifles in .308/7.62mm on the market today. The rear mount has wrench flats to torque the silencer to the barrel. There is a secondary retention latch that is depressed to remove the silencer from the QD mount.