Today I stumbled upon a great restored Quick firing Bofors gun (QF MK 1.2) at a ‘veterans’ nursing home and had to share.
This impressive gun was designed in the 1930s by the Swedish arms manufacturer AB Bofors. It was one of the most popular medium-weight anti-aircraft systems during World War II. It was used by most of the major players in the war, indeed the Swedish firm could barely handle the orders and other nations started to build them on license. The British Army had first examined the weapon when they received a number of Polish-built examples in 1937 for testing, and it quickly became apparent that they were exceptional weapons. The British/Australian gun was known as the "QF 40 mm Mark I" (QF standing for "quick firing"), or Mark I.2 (after a minor change to the flash hider). I found the hydraulic system quite interesting. The QF MK I became relatively obsolete as an AA gun after WWII due to the speed of jet aircraft – These vintage guns are still in use in some armies around the world.