This one gives the best of both worlds. The Double Dog is equppied with a ported barrel with stylish diamond cuts. The Charter Arms® Mag Pug® revolver is second to none for personal protection. Its ergonomic hand-filling sleek walnut grip helps minimize recoil and muzzle rise for maximum control. While the ported .357 Magnum chambering delivers magnum force on target. And if you prefer to carry a different cartridge the next day no problem! With just one crane screw washer you can switch to our 9MM Pit Bull® cylinder that comes with the firearm. – The 9MM cylinder is designed to eliminate the need for moon clips. Both cylinders have the calibers laser engraved on them so you can tell them apart. You will receive extra crane screw washers with this model. – Calibers: .357 MAG. & 9MM – Capacity: 5 shot (Both Cylinders) – Frame: Large – Frame Material: Stainless Steel – Finish: Stainless Steel – Grip: Backpacker Walnut – Sights: Adjustable – Hammer: Standard – Barrel: 4.2 Ported – Weight: 24 Ounces – Length: 8.75 – Height: 5