Umarex XBG lightweight, 19-shot, drop-free magazine compact BB air pistol fires BBs at 410 fps! Umarex X.B.G CO2 Pistol .177 Metal BB Pistol The Umarex XBG lightweight, compact BB air pistol fires BBs at 410 fps. Its durable, metal, 19-shot, drop-free magazine makes reloading quick and easy to keep you shooting for hours. Powered by a single 12g CO2 capsule (sold separately) that is housed in the grip, it shoots just as fast as you can pull the double-action trigger. Textured grips. Integrated Weaver rail for mounting accessories. Fixed front and rear sights. Manual safety.