The Hornady Frontier 5.56 NATO 55gr FMJ is built for consistent performance and dependable function across a wide range of applications, including varmint hunting, target shooting, training, and self-defense. Designed to meet the needs of both civilian shooters and law enforcement, Frontier Cartridge delivers versatile, high-quality ammunition in 5.56 NATO/.223 Remington configurations. Each round features Hornady's non-steel core, target-friendly FMJ bullets, along with brass cartridge cases, military-grade boxer primers, and carefully selected propellants.