The M422 “Mighty Mite” was built by AMC as a light weight truck for “vertical envelopment operations,” i.e. parachuting, for the U.S. marines. An aluminum body helps keep the weight down to 1,700 pounds. The truck came in three models: the M422, M422a1, and M422a2. The M422ai has a 71" wheelbase. It is 6 inches longer and 80 pounds heavier than the M422. The a1 uses the spare tire and windshield from the M38a1. Designed as a combat vehicle suitable for airlifting and manhandling, it can operate on all kinds of terrain. This vehicle has a fording depth of 21 inches, although it can drive in water up to 60 inches with a special kit. The suspension is mounted in a unique way which virtually eliminates roll-overs. The Mighty Mite was designed to carry a payload of 850 pounds while towing another 1,000 pounds on a trailer.