Wikia

The autoblaster was an ancient blaster cannon design used by the naval forces of the Sith Empire.

As with modern blaster cannons, the autoblaster produced a high-intensity particle beam that was propelled from the barrel at a target. However, unlike its modern equivalents, the autoblaster fired a salvo of wild bolts, powerful but not extremely accurate. The autoblaster was reintroduced during the Galactic Civil War, now as an updated version of blaster technology. Designed for the B-wing fighter, this modern autoblaster had an even higher rate of fire than other blasters, but was not available to other models until after the Battle of Endor.