Starline 5.56X45MM Brass Cases (100)
 
TheStarline 5.56X45MM Brass Cases (100)NATO is the military version of the .223 Remington, which is one of the most widely used centerfire cartridges today. Starline’s 5.56x45mm brass is identical to Starline’s .223 Remington brass except for a slight change in the metallurgy making it harder at the base of the case.