It was replaced by the more heavily armed M16 multiple gun motor carriage in April 1944.

The vehicle was powered by a six-cylinder White 160AX, 128 horsepower (95 kW), 386 cubic inches (6,325 cc) gasoline engine, with a compression ratio of 6.3:1.

The vehicle was armed with two 0.5 inch M2 Browning heavy machine guns placed on an M33 Maxson mount.

[1][3][4] The two machine guns were fired remotely and powered by a small electrical motor near the back of the turret.

[6][8][9][10][11] The next stage of development was to use the T1E2 configuration on the longer chassis of the M3 half-track, since it could store more ammunition.

This vehicle, originally designated as the T1E4, was accepted into production as the M13 multiple gun motor carriage on 27 July 1942.

[6][8][9][10][12] The M13 served at the landing at Anzio with the VI Corps of the Fifth United States Army in January 1944.