Originally Posted by Stefan

Not sure that is what it was intended for. Apparently it was designed to enable troops to fire around corners in urban fighting scenarios. It's an interesting piece of kit and seemed to work ok, though it didn't really make it in combat. Keep in mind tank crews weren't issued MP44's as it is too big to be used in an armoured vehicle and numerous German armoured vehicles had pistol ports to enable the crew to fire out. Finally, remember if your own supporting infantry had allowed soviet troops to get onto your vehicle, the last thing you would want to do is open the hatches.