A lightning gun is utilized by the Millennium Falcon. It can be observed affixed to the ship's front left.
The lightning gun was a weapon that the Ganathans created. Following damage sustained from the Slave I during a dogfight above Nar Shaddaa, Empatojayos Brand arranged for one to be installed on the Millennium Falcon.
Despite its perceived "antiquity," a common characteristic of Ganathan technology, the lightning gun demonstrated significant effectiveness when coupled with a contemporary power source. Boba Fett learned this firsthand during a battle between the Millennium Falcon and the Slave I. Equipped with the lightning gun as a replacement for the portside bow mandible, which had been damaged in a previous encounter with Fett, the Falcon successfully disabled Slave I, forcing Fett to dock the damaged craft for an extended period. Furthermore, during the Imperial assault on New Alderaan, this weapon proved capable of obliterating at least one AT-AT.