The Socom 16 5/8-24 thread adapter allows you to use any muzzle device threaded for the common 5/8-24 industry standard. This adapter is an integral gas lock, thread adapter and front sight base. It allows the use of the factory sight and gas plug. The shoulder allows use of suppressors and other large diameter accessories without changing the gas plug. Made from high quality, heat treated, stainless steel, precision machined to exact tolerances. Must be installed and inspected by a competent gunsmith if used with suppressor.