Trench Art Model Aircraft on oak base

This rather portly model is a mystery and we have to date been unable to ID, so any help welcome! Ideas to date have been a French Moraine or a Russian Yak but neither seem to quite line up. It has been suggested this is a fantasy aircraft but we feel it unlikely not to be based on a real airframe. The model carries 4 gun ports to the leading edge of the wing so clearly a fighter and likely to be WWII. It is very nicely fashioned from aircraft alloy and an unusual detail is the small piece of perspex set into the cockpit. The base is oak and measures 4.5" square (12 cm) and the model stands 3.5" high (9 cm). The wingspan is 6" (14 cm).