[rof120]

Sorry I didn't see your last post. I fear I don't know enough (not a good enough expert). It is very likely that you are right (rounded wingtips etc.). So the wings were modified standard F wings. But was it possible at all to make such significant changes to existing wings (even if done in the factory)? Mounting a 20 mm cannon in a wing which carried no gun before was not a small affair I think (making big holes for the cannon barrel in the wing spars etc.?). Not to mention the big ammo drum.