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-BlackPRODUCT SPECIFICATIONS:Dimension 2.10 X 2.85 X 4.90Height 2.1000Width 2.8500Length 4.9000TYPE/COLOR MUZZLE COMPENSATORSIZE/FINISH 24MM/BLACKMATERIAL STEELOTHER FEATURES: 24MM THREAD FOUND ON MOST AK-74 RIFLES, PROJECTILE UP TO .30 CAL, 2.5" LONG, MADE IN USANO DIRECT SHIP TO CALIFORNIA