Laserblast

Billy's never been able to fit in where he lives...suddenly that's not a problem anymore. A desert exploration leads to an explosive discovery for Billy - his own personal laser gun. Each time Billy fires the laser - he begins to mutate, little by little, into an alien. Possessed by the new power in his hands, Billy terrorizes the town with the awesome alien device. Now it's a race against time before the aliens return to claim the weapon...and his life.