Global Ordnance 5.56x45mm M193 ammunition is factory-new, brass-cased, Boxer-primed, and reloadable, offering military-grade performance in a commercially available package. Manufactured to strict NATO STANAG 4172 and MIL-C-9963F specifications, this high-quality ammunition is designed for reliable function and accuracy in 5.56mm firearms. Product Features Case Type: Brass (Reloadable) Primer Type: Boxer Product Specifications Caliber: 5.56x45mm Bullet Weight: 55 Grains Bullet Type: Full Metal Jacket Muzzle Velocity: 3,162 fps Muzzle Energy: 1,218 Quantity: 20 Rounds per Box