Winchester Repeating Arms

Caliber: 5.56 NATO - Bullet Type: Full Metal Jacket (FMJ) - Bullet Weight: 55 Grains - Rounds: 150 Rounds per Box 4 Boxes per Case - Muzzle Velocity: 3270 - Muzzle Energy: 1306 ft/lbs - Jacket Material: Copper - Core Material: Lead - Ballistic Coefficient: 0.267 - Casing: Brass