SureFire WARCOMP-556-CTN is a closed tine flash hider that is neutrally ported to aid in recoil management. Compared to that of the open tine adapters, the WARCOMP-CTN for 5.56 caliber weapons mimics that of a traditional birdcage flash hider along with being a rock solid mounting option for SOCOM Series Fast-Attach suppressors. The muzzle device also has wrench flats machined into the sides of the adapter for aid in installation. The closed tine option does not have as much flash reduction to that of the open tine adapter but still is very capable.SureFire WARCOMP-556-CTN is a closed tine flash hider that is neutrally ported to aid in recoil management. Compared to that of the open tine adapters, the WARCOMP-CTN for 5.56 caliber weapons mimics that of a traditional birdcage flash hider along with being a rock solid mounting option for SOCOM Series Fast-Attach suppressors. The muzzle device also has wrench flats machined into the sides of the adapter for aid in installation. The closed tine option does not have as much flash reduction to that of the open tine adapter but still is very capable. Feature: Provides reduction in muzzle flash compared to a plain muzzle, which helps to conceal the shooter's location and preserve darkadapted vision Aids in reduction of muzzle rise allowing shooter to stay on target for faster follow-up shot Serves as a rock-solid mounting adapter for all SureFire SOCOM series Fast-Attach suppressors Made in the USA