Type: Airsoft pistol. Manufacturer: G&G. Model: Xtreme 45. Materials: Mostly metal construction with a few plastic parts. Weight: 2.1 pounds. Barrel: 4.88 inches, metal non-rifled. Propulsion: CO2 x 1. Action: Semi auto blowback, single action only. Ammunition Type: 6mm plastic Airsoft BB's. Ammunition Capacity: 16 round magazine. FPS: 400+. The G&G Xtreme 45 CO2 Blowback Airsoft Pistol is a great combination of realism and practicality toped with lots of great features you don't often find in a gun in this price range: Almost all metal, blowback operation, good fps and CO2 usage, fully adjustable rear sight, full size drop out metal magazine with hidden tab, awesome looks, and low price point. If your in the market for a good all around 1911 styled Airsoft blowback pistol, definitely put this one on the check list! Read full article here: https://www.replicaairguns.com/2012/12/15/gg-xtreme-45-co2-blowback-airsoft-pistol-table-top-review.html