The Hornady Black line of ammunition features new bullet and propellant technology specifically created for optimal performance in a variety of shooting applications with supreme accuracy and consistency. Its clean burning propellant technology provides 15 to 20% temperature reduction, resulting in a progressive burn rate with minimal flash. Made in a .223 Remington cartridge, this round is loaded with a 62 grain FMJ projectile and is designed to fit, feed and function with direct impingement, gas piston, suppressed, unsuppressed, bolt, supersonic, subsonic, rifle-length, mid-length, carbine, and pistol AR platforms.