

The standard type of 5.56mm ammunition offers good performance to the shooter. Its performance and popularity among military forces endures despite the Great War: By 2287, it has served Americans for over two centuries, from the United States Army to the New California Republic Army. It is a rimless, bottleneck cartridge that offers tremendous wounding potential under the right condition. 223 Remington, originally developed for the M16 service rifle of the United States Army.

The 5.56x45mm round is a rifle cartridge derived from the.

The following section is transcluded from 5.56mm round.
