Hornady Frontier 223 Remington 55gr FMJ Rifle Ammo - 20 Rounds - American made and military grade are the hallmarks of Frontier Cartridge. This line of ammo gives shooters the best of both worlds. It is configured for a wide range of shooting and applications, from target/match shooting to varmint hunting. Frontier Cartridge features brass cartridge cases and military grade boxer primers and propellant. Made In The USA