High Quality Content by WIKIPEDIA articles! Battle Rifles are chambered in full power rifle rounds and are sometimes full-automatic but usually kept in semi-automatic form. For firearms that fire intermediate calibres (IE: 5.56x45mm NATO / 7.62x39mm) see List of assault rifles. The difference between a battle rifle and a designated marksman rifle is often only one of terminology; many of the weapons below are currently still in use, re-designated as DMRs.