The Remanufactured 5.56x45mm NATO loaded by BlackGun Industries is loaded with a 55 grain M193 Full Metal Jacket Boat Tail projectile in previously fired brass cases. Before loading each case is fully prepped including removing any crimps that might have been present around the primer so they work great for reloading. This ammunition is non-corrosive in boxer-primed reloadable brass cases. This ammunition is non-corrosive, in boxer primed, reloadable brass cases.
Please Note: While the 5.56x45mm NATO will fit in a .223 Remington chamber, the 5.56 is a military round that runs at higher pressures than its .223 counterpart and is not recommended to be fired in a .223 Remington chamber.