The mouth of a Leopard 2 A4

The Leopard 2 is a main battle tank developed by Krauss-Maffei in the early 1970s for the West German Army. The tank first entered service in 1979 and succeeded the earlier Leopard 1 as the main battle tank of the German Army. Various versions have served in the armed forces of Germany and twelve other European countries, as well as several non-European nations. More than 3,480 Leopard 2s have been manufactured. The Leopard 2 first saw combat in Kosovo with the German Army and has also seen action in Afghanistan with the Danish and Canadian contributions to the International Security Assistance Force.

There are two main development batches of the tank, the original models up to Leopard 2 A4, which have vertically faced turret armour, and the "improved" batch, namely the Leopard 2 A5 and newer versions, which have angled arrow-shaped turret appliqué armour together with other improvements. All models feature digital fire control systems with laser rangefinders, a fully stabilized main gun and coaxial machine gun, and advanced night vision and sighting equipment (first vehicles used a low-light level TV system or LLLTV; thermal imaging was introduced later on). The tank has the ability to engage moving targets while moving over rough terrain.

This one is a Leopard 2 A4

with its gun Rheinmetall L/44 120 mm smoothbore gun

The mouth of a Leopard 2 A4

Photo is taken in German's Panzermuseum Munster!