I'm in late '43 and running a IXC w/ 3 flak guns. Only my quad on the rear deck has any kind of plating. The two duals in the 'nest' don't have any plates on them.. that would be nice as long as it doesn't interfere w/ my sighting.. The plates on the deck flak really limit my field of view.. Usually I let my 4 qualified flak gunners shoot (They're much better than I am), but they won't shoot at the surface targets.. That quad is devestating on Elco's