Rebel engineers made many alterations to the original R-22 design to produce the RZ-1 model as seen in "Return of the Jedi". The original engines were swapped out for more powerful ones, while other major components were replaced with lightweight versions so a supraluminal hyperdrive could be added. The resulting fighter is faster than even the Empire's TIE interceptor and perfect for hit-and-run attacks, long-range patrols, and reconnaissance missions. Its two laser cannons, mounted on special swivel mounts, can elevate or depress 60° vertically; some were modified for full 360° rotation but these had a greater chance to jam. However, engineers could not fit the A-wing with an astromech droid, which limited how many hyperspace coordinates it could carry. The lack of droid assistance also makes it challenging even for a being with Jedi-like reflexes to control a fighter so fast and maneuverable. Consequently, only the best Rebel pilots are allowed to fly the A-wing.