Recognized for dependability, PPU RANGEMASTER ammunition is manufactured using the highest grade materials and quality production control, ensuring precision performance in accordance with military specifications. Series Rifle Caliber 5.56x45mm NATO Application Target Shooting Bullet Type Full Metal Jacket Boat Tail Bullet Weight 55 gr Muzzle Energy 1282 ft lbs Rounds Per Box 1000 Casing Material Brass Muzzle Velocity 3240 fps Unit Of Measure case