M1128 Mobile Gun System

The M1128 Mobile Gun System (MGS) is an eight-wheeled assault gun of the Stryker family, mounting a 105 mm tank gun, based on the Canadian LAV III light-armored vehicle manufactured by General Dynamics Land Systems for the U.S. Army.

M1128 Mobile Gun System
A M1128 Mobile Gun System during a training exercise in 2015
TypeAssault gun
Armored fighting vehicle
Tank destroyer
Place of originCanada, United States
Service history
WarsIraq War
War in Afghanistan
Production history
DesignerGM Defense of Canada, General Dynamics Land Systems
ManufacturerGeneral Dynamics Land Systems
Produced2002–2010
No. built142
Specifications
Mass18.77 tonnes (20.69 short tons; 18.47 long tons)
Length6.95 m (22.92 ft)
Width2.72 m (8.97 ft)
Height>2.64 m (>8.72 ft)
Crew3

Armor14.5 mm resistant
Main
armament
M68A2 105 mm cannon
Secondary
armament
7.62 mm machine gun; M240C coaxial machine gun; 2, M6 smoke grenade launchers
EngineCaterpillar C7 turbo diesel
260 kW (350 hp)
Power/weight18.65 hp/ton
TransmissionAutomatic 6 forward, 1 reverse
Suspension8×8 wheeled
Ground clearance15 in (38 cm)
Fuel capacity56 US gallons (212 liters)
Operational
range
330 miles (528 km)
Maximum speed 60 mph (96 km/h)

The MGS program emerged after the 1996 cancelation of the Army's M8 Armored Gun System, the service's planned replacement for the M551 Sheridan light tank.

The MGS was procured in limited numbers. It has been retired since the end of 2022 due to design and operational deficiencies.

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