Umarex S&W M&P9 M2.0, CO2 Pistol, 177BB, 400 Feet Per Second, Matte Finish, Black, 18 Rounds 2255004 This is the officially licensed Smith & Wesson M&P9 M2.0 blowback action BB pistol. This air pistol is fully featured with blowback action, full-size drop-free magazine, last round hold open, 18 round BB capacity, trigger blade safety, interchangeable grip backstraps, and ambidextrous slide release. This S&W M&P9 M2.0 shoots .177 caliber steel BBs at a velocity of 400 FPS.