Armored Hunte The 2A6 variant took the Leopard's offensive capabilities and survivability to a new level: it featured an L/55 120mm smoothbore gun with superior muzzle velocity and improved armor piercing. Wedge-shaped additional armor was carried over from the 2A5, and the commander was given a panorama sight with thermal imaging viewer, while the gun had an electronic control and stabilization system. The Leopard 2A6 was deployed with units from Spring 2001.