Frontier Cartridge is a division of Hornady that uses state-of-the-industry loading techniques and quality control procedures to ensure the reliability and consistency of every round. Made in the USA with military grade brass cartridge cases, primers and propellants. PLEASE NOTE: While the 5.56x45mm NATO round will fit in a .223 Remington chamber, 5.56 NATO is a military round that runs at higher pressure than its .223 counterpart, and is therefore not recommended for use in rifles chambered for .223 Remington. Order today!
