

The new 105mm M68 gun was installed in an M48A2 turret and with diesel engine technology having come far since the end of the Second World War, it was decided to install an AVDS-1790-2 diesel engine. At about the same time, the US had decided to upgrade the current in service tank, the M48. The US tested the L7 tank gun and after deciding it was superior to any of the experimental weapons then in development, fitted a new breech to it and designated it the M68. The result was the L7 105mm rifled tank gun. In 1956, British Intelligence had acquired detailed information about the Soviet T-54 MBT and the British had decided to develop a new tank gun that was better capable of defeating this opponent.
