The inspiration for the 40mm Bofors gun traces back to the 1920s when the Swedish Navy expressed a desire for a more capable replacement for their Vickers Pom-Pom anti-aircraft guns.

美造40mm发光信号弹 枪榴信号弹 枪榴信号 ... 黄吊星信号弹、M52A1枪榴红吊星信号弹 美造M17A1、M18A1、M19A1、M20A1、M21A1、M22A1、M52A1枪榴信号弹 这7种 ...