The PX4 Storm in .40 S&W shares the same rotary barrel system as the 9mm variant, applied to the larger caliber. Magazine capacity is 14 rounds. The rotary barrel system handles the sharper recoil impulse of .40 S&W effectively, and the PX4 platform competes well against the standard Glock 22 / SIG P226 configuration in law enforcement adoption. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 14 Year introduced: 2004, Italy Weight: 27.7 oz Overall length: 7.6" Status: Active Intended use: Law Enforcement, Service