PMC Ammunition 5.56 NATO 55 Grain FMJBT Battle Pack ammunition is built for reliable, high-volume performance. The 55-grain full metal jacket boat-tail projectile offers improved aerodynamics, flatter trajectory, and enhanced accuracy, achieving a muzzle velocity of 3,270 fps and 1,306 ft-lbs of energy. Manufactured with non-corrosive Boxer primers and reloadable brass cases, it ensures consistent feeding and cycling in AR-15 and other 5.56 NATO platforms. The 200-round Battle Pack (10 boxes of 20) is vacuum-sealed in a durable polymer sleeve for moisture resistance and long-term storage. Ideal for range training, tactical drills, and secure stockpiling.