The PMC X-TAC 5.56 NATO is a high-quality, reliable, and versatile rifle cartridge that is designed to meet the demanding needs of military and law enforcement personnel. The cartridge features a brass casing, boxer primer, and a 55-grain full metal jacket bullet that is capable of delivering accurate and consistent performance at medium to long ranges. The X-TAC 5.56 NATO is a great choice for those who need a reliable and dependable cartridge for training, target shooting, or self-defense. With its consistent performance, the PMC X-TAC 5.56 NATO is a popular choice for shooting enthusiasts and professionals alike.