Manticore nightbrake 24mm compensator fits most ak74 FEATURES:-1/2x28 threads-Designed specifically for the 24mm thread found on the muzzle of most AK-74 rifles-18 ports distributed around the upper 270Adeg of the device help stabilize & reduce exiting gas pressure-Will clear any projectile up to .311" in diameter-Machined from 8620 steel-Black Other Features: 24mm thread found on most ak-74 rifles, projectile up to.30 cal, 2.5" long, made in usa