The Hornady Black line of ammunition features new bullet and propellant technology specifically created for optimal performance in SBR's 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, this round is loaded with a 75 grain Hornady Interlock HD projectile, which 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. #html-body [data-pb-style="62DF828791A3B"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF828791A48"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}