Hornady Frontier 5.56NATO 55gr features State-of-the-industry loading techniques and quality control procedures to ensure the reliability of every Frontier Cartridge round. Frontier Cartridge offers ammunition configured for a wide range of shooters and applications, everything from plinking, target shooting, and hunting to law enforcement training and self-defense. In addition to Hornady target-friendly, non-steel core bullets in a variety of offerings, Frontier Cartridge features brass cartridge cases and military-grade boxer primers and propellant. Hornady Frontier 5.56NATO 55gr is the ammunition to stock up on!