The Royal Ordnance L7, officially designated Gun, 105 mm, Tank, L7, is the basic model of the United Kingdom's most successful tank gun. It is a 105 mm L/52 rifled design by the Royal Ordnance Factories, intended for use in armoured fighting vehicles, replacing the older QF 20-pounder (84 mm) gun mounted on the British Centurion tank. The successful L7 gun has been fitted on many armoured vehicles, including the Centurion, the German Leopard 1 and, in an altered design, as the M68 gun in several variants of the US M48 Patton and M60.
An L7 mounted on a Centurion Mark 5
Model of L7 gun barrel cut to show rifling inside, on display at the Deutsches Panzermuseum
62 caliber ZPL-94 on a Type 88A tank
A tank gun is the main armament of a tank. Modern tank guns are high-velocity, large-caliber artilleries capable of firing kinetic energy penetrators, high-explosive anti-tank, and cannon-launched guided projectiles. Anti-aircraft guns can also be mounted to tanks.
L30 gun on a Royal Scots Dragoon Guards Challenger 2 tank.
French Saint-Chamond tank of 1917, with 75 mm gun in nose
Replica of German A7V "Wotan" showing 57 mm Maxim-Nordenfelt gun in front
British Mk II tank captured by German troops in April 1917, showing long 57 mm naval gun in side sponson
