Canadian Artillery: Polsten Quadruple 20-mm Anti-Aircraft guns
Mounting, Quadruple 20mm Anti-Aircraft, Polsten (Library and Archives Canada Photo, MIKAN No. 3607616) Polsten 20-mm Quadruple Anti-Aircraft Gun Mk. I, mounted on a CMP truck. The Polsten was a Polish development of the 20-mm Oerlikon gun, designed to be simpler and much cheaper to build than the Oerlikon, without reducing effectiveness. It was used on … Read more