The "Patagón" tank is a light tank developed in Argentina during the early 2000s, that was expected to enter service with the Argentine Army. It is based on a SK-105 Kürassier chassis with a refurbished AMX-13 turret. The project was cancelled in late 2008 after five tanks were converted.

The SK-105 Kürassier is an Austrian light tank armed with a rifled 105 mm gun in an oscillating turret. It is estimated that over 700 have been produced, with initial deliveries in 1971. It shares its CN 105-57 main gun with the French AMX-13, which was widely produced and deployed.