Armored Military Truck 3D model

"ince 1940, the main antitank, all-terrain fast vehicle in service with the US Army was the M6 GMC. It was a basic 4 wheeled truck equipped with a 37 mm (1.46 in) gun installed on the rear bed, only protected by a frontal mask. The crew was exposed, and the M6 was lightly protected.

Despite this, it remained in service until 1945. However, its deficiencies led the US Army ordnance department to launch the development of a new vehicle in July 1941. The requirements asked for a 6×6 with better off-road capabilities, entirely armored, with the 37 mm (1.46 in) gun protected by a turret, and a better anti-personal, close-combat armament, which included a combination of a heavy .50 (12.7 mm) and a .30 (7.62 mm) caliber machine-guns."