A Redirection crystal was a device used by Imperial assassination teams, as well as Drend Navett's Vengeance cell. It was used with a blast tube to make it look like someone had fired a shot when the shooter hit the crystal behind them, making it look like a blast. The redirection crystal would be destroyed by the blast tube in the process, making it impossible to prove it had been present. This tactic was especially effective when used in conjunction with the rare Xerrol Nightstinger, a blaster rifle which fired an invisible bolt.