Manufacturer Model Number: 163690 Manufacturer: Smith and Wesson Model: 640 Caliber: 357 Magnum | 38 Special Type: Revolver Item Type: Firearm Firearm / Accessory Action: Double Action Only Firearm / Accessory Capacity: 5 Finish: Satin Stainless Steel Sights: Black Blade Front Sight Stock Frame Grips: Steel Frame Black Synthetic Steel Frame Overall Length: 6.6" Weight: 22.1 oz. Shipping Weight: 2.0 Feature: Enclosed Hammer Feature: J-Frame Optic Adjustable Objective: false Optic Reticle Illuminated: false