Development started in 1942. In April 1943 the General Motors company produced the first prototypes. One of a few American tank destroyers manufactured on its original chassis, not on a tank chassis. The tank destroyer became the fastest armored vehicle, of this type, of World War II. A total of 2,507 vehicles were produced from July 1943 through October 1944.
M18 T67
Wright Continental R-975EC2
SCR 510
M18 M34A1
3-inch AT Gun M7
M18 T69
Wright Continental R-975C1
SCR 610
76 mm AT Gun M1A1
Wright Continental R-975C4
SCR 619
76 mm AT Gun M1A2
M18 M1
90 mm AT Gun M3
Characteristics are specified for vehicles with crews trained to 100%.