Beretta USA Px4 Storm 40 S&W 17rd Black Steel Magazine

The Beretta Px4 Storm factory magazine is a genuine Beretta USA spare for the Px4 Storm pistol chambered in 40 S&W. This is the full-capacity 17-round extended magazine, identified by Beretta part number JM4PX4017, and the configuration Beretta offers for shooters who want the maximum round count from the Px4 platform.

Built around a steel body with a matte black finish, the magazine pairs the metal housing with a polymer follower and an extended polymer baseplate that delivers the higher 17-round capacity over the flush-fit 14-round variant. The steel magazine body is built for long service life and reliable feeding with both FMJ practice ammunition and modern hollow-point duty and defensive loads.

Calibrated specifically for the Px4 platform, this detachable magazine seats and feeds reliably in 40 S&W Beretta Px4 Storm pistols. Whether you are running a full-size Px4 as a duty or home-defense gun, or simply want a spare or replacement for range and self-defense use, this Beretta factory 17-round magazine delivers the capacity and reliability the platform was designed around. Made in Italy.