In 1940 Emil Dewoitine was contracted to design a cutting-edge fighter to the Ejército del Aire (Spanish AF). This fighter was considered as a safeguard against the posible unavailability due to the war of the German Bf 109. The result was the utterly elegant HS-50/D-600, a clear evolution of Dewoitine’s previous D-551. It was to be powered by a “moteur canon” Hispano Suiza HS 12 Z and it armament was, apart of the usual 20 mm Hispano in the “moteur canon”, four 7.5 mm machine guns in the wings.
After 2 years of design work the project was cancelled in 1943, but not before this mock-up and some systems test stands were made. The Spanish AF got their “Messers”, but only much later and when their usefulness was more than dubious.
More about E. Dewoitine in Spain.