Hornady Black 5.56x45mm NATO Ammo 62 Grain Full Metal Jacket 247 Rounds Ammo Can ammo review offers the following information;Hornady BLACK ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Loaded with legendary Hornady bullets, Hornady BLACK ammunition is designed to fit, feed and function in a variety of platforms. Direct impingement, gas piston, suppressed, unsuppressed, inertia, bolt, pump, supersonic, subsonic, rifle, mid-length, carbine or pistol – Hornady BLACK ammunition delivers superior performance for a variety of applications. This ammunition is new production, non-corrosive, in boxer-primed, reloadable brass cases.