The slim profile of the single stack Walther PPS M2 makes it an ideal pistol for concealed carry. The gun combines German engineering and the hard-hitting performance of the 9mm to make one potent self-defense pistol. Now, Umarex is offering an officially licensed replica with the same thin profile and superb grip texture. And, in true Umarex fashion, the BB gun version has realistic blowback action and last round hold open. The end result is a BB gun that is ideal for training. For those who would rather just have fun, the PPS M2 is ideal for that, too. The gun runs on easy to find 12 gram CO2 cartridges, which are easily swapped out with the tool stored in the gun's backstrap.