A special weapon feature that was used by the Traitor Legion Forces of Covenant faction, The Betrayal Legion Corps. Unlike the original HMG being used by other factions, the Revy machine Gun was by the far the most advanced weapon to date suprassing its rivals in terms of technological advantages. The HMG are loaded with multiple magazines that can be instantly be used on an needy situation, to do this the HMG had been installed with the Heavy Multi Mode Programming System that allows the use of alternate ammunition, that which endows the weapon with great versatility, adapting itself to the changing situations of the battlefield.