The Hornady Black line of ammunition features new bullet and propellant technology specifically created for optimal performance across 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 5.56 NATO cartridge and loaded with a 62 grain FMJ projectile, this round 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/MSR platforms.