Canadian RAM tank mounting a OQF 3.7 inch Anti-aircraft Gun

RAM Tank - OQF 3.7 inch Anti-aircraft Gun

Sniper

Canadian military came up with a system that effectively put four 20 mm auto-loading cannons into the turret of a tank. It was known as the Skink.

As the marriage of two off-the-shelf technologies- the M4A1 Grizzly tank (a Canadian version of the Sherman tank) and the Polsten automatic cannon, the Skink was a weapon system that saw little action but was a superb proof of concept.