Does anyone know of photos/drawings of this turret, intended to be installed in nose and tail stations on bombers, developed between 1940 and 1942? It was a very advanced ball turret, armoured and equipped with a prismatic gunsight.
Did this have anything to do with the 16 mm Vega gun, of about that period? The cartridge used a modified .50 BMG case with the larger bullet providing more space for HEI filling, IIRC. I don't know anything about the gun design or mountings, except that the gun was supposedly very slender to fit easily within thin wings.