Bullet type: 55 Grain Copper full metal jacket (FMJ)
Quantity: 100 round box
Casings: Brass boxer primed
WARNING: Do not attempt to fire these in a rifle chambered in 223 REM. 223 REM can be fired in a rifle chambered in 5.56 (such as a standard AR-15), but 5.56 cannot be fired in a rifle chambered in .223.