Type: BB air pistol. Manufacturer: Umarex. Model: Colt Defender. Materials: Mostly metal construction with a few plastic parts. Weight: 1.6 pounds. Barrel: 4.3 inches, metal non-rifled. Propulsion: CO2 x 1. Action: Semi auto, double action. Ammunition Type: 4.5mm BB's. Ammunition Capacity: 18 round magazine. FPS: 440. This is another low cost replica air gun from Umarex designed for the more entry level buyer. It's a very solid and well made gun being that it's mostly metal. There are many positive aspects about teh Colt Defender, it's fairly consistent and accurate, has all the Colt licensing and trademark, has a good 440fps, uses an all metal design, and comes in at a very affordable price. Read full article here: https://www.replicaairguns.com/2011/2/19/umarex-colt-defender-co2-45mm-bb-pistol-review.html Buy Umarex Colt Defender CO2 4.5mm BB Gun in Canada: https://www.replicaairguns.ca/umarex-colt-defender-bb-pistol Buy Umarex Colt Defender CO2 4.5mm BB Gun in the US: https://www.replicaairguns.us/umarex-colt-defender-bb-pistol