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Self-propelled artillery gun
155mm Gun Motor Carriage M12
M12 firing across the Moselle River in France, 1944.
Type
Self-propelled artillery gun
Place of origin
United States
Service history
In service
1942–1945
Used by
United States
Wars
World War II
Production history
Designed
1942
Manufacturer
Pressed Steel Car Company
Produced
September 1942 – March 1943
No. built
100
Variants
M30 Cargo Carrier
Specifications
Mass
59,000 pounds (27 metric tons)
Length
22 ft 1 in (6.73 m) hull, spade retracted 22 ft 2.5 in (6.769 m) including gun
Width
8 ft 9 in (2.67 m) without sand shields
Height
9 ft 5.5 in (2.883 m) over gun shield
Crew
6 (Commander, driver, 4 gun crew) with remaining gun crew in M30
Armor
0.5–2 inches (13–51 mm)
Main armament
155 mm (6.1 in) M1917, M1918, or M1918M1 gun in Mount M4 10 rounds
Engine
Wright R975 C1 350 horsepower (260 kW) at 2,400 rpm
Power/weight
13.06 hp/metric ton
Suspension
Vertical volute spring suspension (VVSS)
Operational range
140 miles (230 km)
Maximum speed
Road: 21–24 miles per hour (34–39 km/h)
The 155 mm Gun Motor Carriage M12 was a U.S. self-propelled gun developed during the Second World War. It mounted a 155 mm gun derived from the French Canon de 155mm GPF field gun.
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