If you have a Knights Armament NT4 suppressor, this is the muzzle device for you. Featuring legendary Knight's quality, the M4 QD serves as both a muzzle compensator and a quick detach mount for the NT4 suppressor with gate latch attachment. It also makes a great stand alone muzzle device!
Fits:
.223 bore diameter, 1/2x28 threads
Fits:
.223 bore diameter, 1/2x28 threads