the Oscar also had no armour and no protection for the fuel tank. It didn't even have a bulkhead behind the pilot. early versions were so lightly built that some of them broke up in aerobatic flight, not even combat. Later ones were reinforced but still very light so that they usually caught fire and came apart when hit by the guns of a P40 or Hurricane. Later ones had some armour and fuel tank protection but were still vulnerable. they were in action right to war's end, despite better aircraft coming along and the last few were expended as Kamikazes. there are about five modern replicas and a few original ones left.