This Beretta replica is a spring powered, single action air pistol. The PX4 Storm allows for easy target shooting! Beretta Trademarks Licensed by Beretta - ItalySpecifications and Features: Trigger Action: Single Power Source: Spring Caliber: 6 mm Capacity: 13 rounds Ammunition: Airsoft BB Overall Length: 8" Velocity: 260 fps Weight: 0.75 lbs. Sights: Fixed