This rocket-engined fighter was initially a development of the Me 163, but retained no more than a configurational similarity. It began life as the Me 163D, was then moved to Junkers as the Ju 248, and then renamed again Me 263. Compared with the Me 163, tha Me 163 had a larger fuselage, wheeled landing gear and a new rocket engine with a 'cruise chamber'. One built. There is no evidence that the Me 263 ever made a powered flight.