Type: Blowback Pellet & BB Pistol. Manufacturer: Distributed by Umarex. Model: SA10. Materials: Metal & Polymer. Weight: 2.05 pounds (930 grams). Barrel: Metal rifled. Propulsion: CO2 x 1. Action: Semi auto blowback, single & double action. Ammunition Type: .177 caliber pellets & 4.5mm BB's. Ammunition Capacity: 8x4 round rotary full size drop out metal magazine. FPS: Claimed 420. I have been waiting a while to get my hands on the Umarex SA10 CO2 Blowback Pellet and BB Pistol and now that I have it for review I can say it seems to be a really well put together CO2 Blowback Airgun. OF course I still need to get some shooting in with it till I make my final decision but so far I am liking what I am seeing. Generally prefer actual Replica Airguns but the Umarex SA10 CO2 Blowback Pellet and BB Pistol does have a really nice look and feel to it, I don't even mind the Gold barrel and I am usually not a big Gold Gun fan. The unique magazine design with its snap in rotary Pellet and BB magazines shoudl come in handy when it coms time for testing and the ability to shoot either Pellets or BB's does give the shooter more options. Read full article here: https://www.replicaairguns.com/2018/1/19/umarex-sa10-co2-blowback-pellet-and-bb-pistol-table-top-review