 Although the aircraft was potentially superior to Italian contemporary fighters (Fiat G 50 and Macchi C 200), the Re 2000 was not considered to be satisfactory by Italian military authorities.Consequently, the manufacturer built the type for export and almost all of the first production served with the Swedish Air Force and Hungarian Air Force, rather than in the Regia Aeronautica.The Re.2000 served as the starting point for several derivatives, including the MÁVAG Héja, Reggiane Re.2001, Re.2002, Re.2003, Re.2004, Re.2005, Re.2006 and Re.2007 combat aircraft.