Current Best Sellers- Co2 BB Guns. This page contains our highest rated Co2 BB guns for the ultimate in shooting fun! Co2 BB guns are used mostly for plinking & shooting at cans. The Co2 provide semi automatic action and eliminates the pumping needed in other bb guns. There are many styles of Co2 BB guns on the market, in just about every price range! Below you will find our most popular Co2 guns from our site. These compressed air guns are designed for speed and accuracy, and are perfect for all your Co2 gun needs. If you do not see the right Co2 BB gun or Co2 Airsoft gun for you on this page, please browse our site or email us for recommendations.