The Bofors Gun is a type of artillery piece originally designed in Sweden. It is most commonly known for its 40mm caliber, which makes it effective against aircraft and ground targets. The gun has been widely used by various military forces around the world since its introduction in the 1930s, particularly during World War II. This weapon is notable for its rapid rate of fire and high accuracy, making it a reliable choice for defense. The Bofors Gun has been adapted for use in different configurations, including towed and self-propelled versions, and has influenced the design of modern anti-aircraft systems.