The armour of the vehicle was 6.4 mm for all sides, except the armoured branch of the windshield which was 13 mm thick. The front of the vehicle is 2 seats, plus one just behind. The first two are for the driver and aid, that of the Fund for the Commander of the vehicle. There was no glass as seen in the photo, but just two small resealable slots.
This new model was please to improve protection against all attacks. It was therefore installed a circular desk M45 on which was mounted a machine gun 12.7 Browning. In addition, three containers for 30 caliber machine guns. were adopted instead of simple rail circling the compartment, which wasn't really impractical in combat.
Between October 1943 and March 1944, 1643 M2A1 were produced, thus 1266 M2 base, which were converted.
Technical specifications:
| Type | Support and armoured transport vehicle |
| Production | 11425 M2 (1266 converts in M2A1)-----1643 M2A1 |
| Motorization | White 160AX 6 cyl, 4 cycles in line 147 HP, or 3000 rpm |
| Maximum speed | Speed maximum 72 route km/h |
| Autonomy | 320 km highway |
| Loading capacity | 10 men |
| Mass | 6.6 tonnes unladen (9.5 tonnes in charge) |
| Length | 5.96 m |
| Height | 2.30 m |
| Width | 1.96 m |
| Armour | 6.4 mm on each side and radiator, 13 mm windshield |
| Weapons | Browning. 50 cal (12.7 mm) Browning. 30 cal (7.62 mm) Mines AT, Granades |
Photos:
Left: The prototype of the M2 half-track accepted: the T14
Right: Two new half-track M2A1