Beretta(R) magazine is designed for compatible Px4 Storm pistols chambered in .40 S&W. The detachable magazine provides a 14-round capacity and features steel construction with a black finish. It is configured as a factory replacement or additional magazine for compatible Beretta Px4 Storm pistols.Key Features Designed for compatible Beretta Px4 Storm pistols Designed for .40 S&W ammunition 14-round capacity Steel magazine construction Detachable box magazine design Black finishBeretta(R) manufactures firearms magazines components and accessories for sporting recreational defensive and professional applications. The company produces factory accessories engineered for compatibility with its firearm platforms. Beretta products emphasize functional design durable construction and consistent manufacturing standards.