.223/5.56 Nato (5.56x45mm), Federal XM855, 62 Grain Steel Penetrator Lead Core Full Metal Jacket Bullet. 300 Round Box.
Federal 5.56 Ammo is the best 5.56 Military ammo manufactured. M855 Full Metal Jacket Bullet - this type of bullet consists of a steel tip sitting on a lead core bullet. The steel tip makes up 27% of the bullet and the remainder of the bullet is lead core.