This version of the venerable starfighter retains the third proton torpedo launcher from that standard XJ X-wing while increasing the number of torpedoes carried to twelve.[1] It also incorporated backup shield generators that proved useful against the Yuuzhan Vong "shield grab" attack.[2] Additionally it boasts improved targeting systems, maneuverability, avionics, and laser cannons, which fired blue rather than red lasers.[1] It could also use the R7-series astromech droid. [source?] Compared to the earlier series of X-wing starfighters, the XJ was a great improvement.