An H&K L30 Gatling laser (also referred to as the Sunbeam Gatling laser). Designed specifically for military use, these were in the prototype stage at the beginning of the War. Multiple barrels allow longer firing before overheating. They are powered by microfusion cells.
In contrast with the L30 Gatling laser, this model is not only fully automatic and with a much larger ammo capacity, requiring a back-mounted battery pack, but also mass produced. While they entered service shortly before the war, they quickly became an important part of the arsenal, both of pre-War and post-War factions.