Leopard 2A6 Main Battle Tank
The Leopard 2 was developed by Germany in the early 1970s and entered service in 1979. It was armed with a 120mm Rheinmetall L/44 smoothbore gun which was later replaced with the L/55 and two 7.62mm MG3A1 machine guns. The A6 featured the Rheinmetall 120mm L/55 smoothbore gun.
It remains in service today as Germany's main battle tank.