An alternate history American tank destroyer/medium tank, the M12 Sabertooth was the primary American Main Battle Tank of the Chimeran War. It was equiped with an 80mm main gun as well as a coaxial gatling gun. The tank traded armor for fast transport via VTOL by being attached by cables. When used in combat, this form of airlift would be nicknamed "the Pounce." The tank would see extensive combat in Great Britain, Iceland, and the American Mainland. However, in comparison to the alien technology of the Chimera, the M12 was woefully insufficient to cause any change to the war's outcome.

There are 4 versions of the chassis in this pack. Two with and without the US Army logo, and two with attached loops to put cables through to recreate "the pounce."