The Umarex Walther CPSport is a .177 caliber Pellet Airgun that uses an 8 shot rotary metal magazines, This Reasonably priced pellet shooter is packed with features like a rifled barrel, adjustable sights, and fully concealed CO2 that is housed in a full size drop out magazine. The Umarex Walther CPSport gives you a nice combination of price vs quality.