The MA6 assault rifle officially called the MA6A Individual Combat Weapon System, was a bullpup, air-cooled, gas-operated, selective fire infantry rifle in use with the UNSC during the Remnant War and the first years of the Galactic War. Designed to replace the venerable and extensive MA5 Series, the MA6 became the service rifle of all three branches of the UNSC after replacing its predecessors. Accurate, sturdy and relatively lightweight, the MA6 was essentially the same weapon as the MA5A and its successor, the MA5C, though featuring modernised materials, design and ammunition. Universally popular, the MA6 was the most commonly issued weapon within the UNSC during its service, alongside the more specialised M62 battle rifle. The MA6 was chambered for the 7.62x51mm NATO full power rifle c