Multiple Gun Motor Carriage M13.
The hinged armor flaps are folded down on this half-track, allowing the machine guns greater depression when firing over the sides or rear. Stowage boxes are just visible on the rear of the vehicle, and the shadow of its double-coil idler wheel spring can be seen. This half-track is still fitted with the early fender-mounted headlights. (Picture from TM 9-710 Basic Half-Track Vehicles (White, Autocar, and Diamond T).)
The armor flaps and the armored covering for the windshield are both raised on this machine. (Picture from TM 9-1223 Ordnance Maintenance--Twin Cal. .50 Machine Gun Mount M33 and Multiple Cal. .50 Machine Gun Mount M45.)
