Type: Pellet air pistol. Manufacturer: UmarexUSA. Model: Walther CPSport. Materials: Plastic (polymer) and metal construction. Weight: 1.3 pounds. Barrel: 3.3 inches, metal rifled. Propulsion: CO2 x 1. Action: Semi auto, double action only. Ammunition Type: .177 caliber Pellets Ammunition Capacity: 8 shot rotary magazine. FPS: 360. The Umarex Walther CPSport Pellet air pistol is a great combination of quality vs price. Even though this gun uses a lot of plastic in the build it still performed flawlessly and looks the part, I did not have a single misfire out of all the 100 shots I took! All the mechanical parts of this gun work smoothly making for a very enjoyable and accurate gun to shoot, giving the shooter the confidence that this gun will work exactly a it is intended to do. Read full article here: https://www.replicaairguns.com/2011/6/29/umarex-walther-cpsport-co2-pellet-bb-pistol-review.html