Specifications and Features: – Calibers: .500 S&W Magnum – Barrel: 10 – Twist Rate: 15 – Groove Diameter: 0.500 – Overall Length: 17.5 – Weight: 4.7 lbs. – Height: 6 – Slide Width: 1.75 – Trigger Pull: 3-4 lbs. – Finish: Brushed Stainless Steel Construction – Sights: Factory Black Fixed Front / Rear Adjustable – Shots: 5