|Origin & Designer||[@designer]|
|Numbers Produced||418 (24 Co|
|Crew||8 (Commander, Gunner, Two Loaders, Two Ammunition Bearers, Radio Operator & Driver)|
|Main Armament||1 x 155mm L/45 M1A1 or M2 Gun|
|Elevation||-5° to +45°|
|Turret Traverse||18° Left & Right (Manual)|
|Ammunition Carried||20 x 155mm|
|Combat Weight||37.000 kg|
|Armour||Upper Hull Front: 13mm.|
Lower Hull Front: 13mm.
Upper Hull Sides: 13mm.
Lower Hull Sides: 25mm.
Hull Rear: 13mm.
Hull Top: 13mm.
Hull Bottom: 13mm.
Open Gun Compartment.
|Engine||Continental R975 C4 (Petrol)|
|Transmission||5 Forward & 1 Reverse|
|Maximum Road Range||116 miles (187 km)|
|Maximum Cross Country Range||80 miles (130 km)|
|Maximum Water Range||[@maximum_water_range]|
|Maximum Road Speed||21 mph (34 kph)|
|Maximum Cross Country Speed||20 mph (32 kph)|
|Maximum Water Speed||[@maximum_water_speed]|
|Notes||The M40 was developed to provide longer range support fire and replace the M12. It was based on the M4 chassis and had a wider hull and tracks. It mounted the 155mm M2 gun in an open compartment which featured a folding platform to extend out to allow for more room. A few pilot versions managed to get to Europe before the end of World War Two, but the M40 mainly saw action in the Korean War.|