The Bofors 40 mm gun, often referred to simply as the Bofors gun, is an anti-aircraft/multi-purpose autocannon 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, used by most of the western Allies as well as by the Axis powers.
|Manufacturer||Bofors Defence (1932–2000)|
United Defense Industries(2000–2006)
BAE Systems AB (2006 onwards)
|Weight||L/60: 1,981 kg (4,367 lb)L/70: 5,150 kg (11,350 lb)|
|Crew||dependent on use|
L/60 40×311mmR (1.57 in)
|Calibre||40 mm L/60–70 (actual length varies from 56–70 calibres, based on model)|
|Carriage||522 kg (1,151 lb)|
|Elevation||L/60: -5°/+90° (55°/s)|
L/70: -20°/+80° (57°/s)
|Rate of fire||L/60: 120 round/min|
L/70: 330 round/min
|Muzzle velocity||L/60: 881 m/s (2,890 ft/s)|
L/70: 1,021 m/s (3,350 ft/s)
|Maximum firing range||L/60: 7,160 m (23,490 ft)|
L/70: 12,500 m (41,000 ft)
Cairns, Qld. Unidentified members, probably of the 10th Australian Light Anti Aircraft Battery, standing around a Bofors 40mm Anti Aircraft gun emplacement opposite a row of houses on a street in Cairns. There is camouflage netting on a frame behind the gun emplacement, probably used to cover the gun when it is not in use.
Jacquinot Bay, New Britain. Nov 1944. A 40mm Bofors anti-aircraft gun of the 472nd Heavy Anti-aircraft Troop in the Wunung plantation.