M3A 7; M7; M2; MZA 7; M3; M3A2 and variants Type :reconnaissance vehicle.Crew :8 men.Armament :most often a .50 M1 machine gun and a 30 M1919A4 on skids at the rear of the hull. Dimensions: length :5.62 mi; width :2.03 m; height :2.11 m.Weight in combat order :5.6 t.Ground pressure :estimated at 4.