BR55 battle rifle

The BR55 battle rifle is a standard-issue service rifle for the UNSC Marine Corps and Navy.
== Overview ==
The BR55 is an air-cooled, gas-operated, magazine-fed, selective-fire bullpup rifle that fires 7.62x51mm ammunition from a 36-round box magazine. It possesses a built-in ammunition indicator and magnetic compass for orientation similar to the MA5 series of assault rifles.
=== Variants ===
==== BR55H2 ====
The BR55H2 is a postwar variant of the BR55. It is frequently used by SPARTAN-IVs during Wargames exercises.