L/60/L/70

The Bofors 40 mm L/60 and L/70 are a series of anti-aircraft autocannons developed by Sweden. The L/60 was a highly successful World War II-era weapon, while the L/70 is a post-war development with improved performance, both widely adopted by numerous nations including Turkey.

Developed by AB Bofors in response to a 1928 Swedish Navy requirement for a rapid-firing naval anti-aircraft weapon, the L/60 officially entered service in 1934. During World War II, the weapon became the dominant light anti-aircraft gun for both Allied and Axis forces, manufactured under license globally and proving highly effective in naval defense and ground support. To counter faster jet aircraft, Bofors introduced the L/70 in 1951, featuring a longer barrel, higher rate of fire, and integration with radar-directed fire control systems. Today, the Bofors 40 mm legacy endures through its continued use on modern naval vessels, armored vehicles like the Swedish CV90, and the American AC-130 gunship, cementing its status as one of the most successful autocannons ever designed.