The Umarex 9*X*P is an air powered action pistol for admirers of today's modern polymer framed handguns._It features a blowback action slide, meaning it has a realistic movement that mimics the feel of a firearm. The all metal slide even locks open when the 9XP runs out of steel BBs, which are housed in a drop free magazine that holds a capacity of 20 rounds. The valve system that operates the slide efficiently distributes the CO2 that powers the action pistol-it also propels a steel BB at up to 400 feet per second!