Ion stunner
From Wookieepedia, the Star Wars wiki.
An ion stunner was a small weapon, identifiable by a focusing dish on its barrel. It was often used by thugs in Coruscant's underlevels. When operated, it would fire a short ion flash capable of temporarily disrupting electronic devices. This made it particularly adept at disabling security doors and droids. During robberies, thugs could also use the ion stunner on organic beings to disorient them. The stunner is also popular with the "street smart" on the under-levels of Republic Capital.
