Light gun
From Tardis Wiki, the free Doctor Who reference
Light guns were handheld weapons used by the Elders. They paralysed their victims in a bright beam of white light. Light guns could also stun. The Elders used light guns to capture Savages. Exorse used a light gun to capture Nanina. Steven Taylor later stole Exorse's light gun and used it against him, and later a guard. (TV: The Savages)