PX4 STORM F 9MM BL/SYN 4" 17+1 3 INTERCHANGEABLE BACKSTRAPS Manufacturer Model Number: JXF9F21 Manufacturer: Beretta Model: PX4 Storm Caliber: 9mm Type: Semi-Auto Pistol Item Type: Firearm Firearm / Accessory Action: Double / Single Action Firearm / Accessory Capacity: 17+1 Finish: Matte Black Sights: 3-Dot Sight System Stock Frame Grips: Polymer Frame Black Polymer Polymer Frame Magazine Quantity and Description: 2 17 rd. Overall Length: 7.55" Weight: 27.7 oz. Shipping Weight: 3.968 Feature: 3 Interchangeable Backstraps Feature: Decocker Optic Adjustable Objective: false Optic Reticle Illuminated: false