Bofors 40 mm L/60 gun
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The Bofors 40 mm Automatic Gun L/60 is an anti-aircraft autocannon, designed in the 1930s by the Swedish arms manufacturer AB Bofors. Wikipedia
Designed: 1930
Action: Automatic extraction and integrated cam-operated recoil powered autoloader
Barrel length: 2.25 m (7 ft 5 in)
Breech: Vertical sliding-wedge
Carriage: 522 kg (1,151 lb)
Crew: 4 (dependent on use)
Elevation: −5°/+90°, 55°/s