The advanced SureFire SF3P three-prong flash hider features a patent-pending design that greatly reduces muzzle flashtypically greater than 99 percent. It has robust tines built to withstand the rigors of combat, and also serves as a rock-solid mounting adapter for SureFire SOCOM Series 7.62 mm Fast-Attach suppressors. The flash hider is precision machined from US mill-certified heat-treated stainless steel with high-precision single-point cut threads for optimum thread interface and a black Ionbond DLC coating to provide maximum protection under harsh environmental conditions. When used in conjunction with a SureFire SOCOM Series suppressor, the patent-pending design of the SF3P provides multiple bearing surfaces to ensure superior suppressor alignment and to prevent the audible ringing of tines inside the suppressor. A rear labyrinth seal minimizes potential carbon buildup in the indexing system and facilitates suppressor removal after extended firing. It is compatible with the Armalite AR-10, DPMS LR308, and 7.62 mm rifles with 5/8-24 muzzle threads. NOTE: SureFire SOCOM Series Fast-Attach sound suppressors, flash hider/suppressor adapters, and muzzle brake/suppressor adapters are not compatible with previous SureFire Fast-Attach sound suppressors, muzzle brakes, or flash hiders.