Dan Wesson Revolver
This revolver fires .177 steel bb's off a single CO2 capsule, giving you around 60 shots. This has a 6 shot magazine, where the bb's are loaded singularly into the 6 cartridges.
Full metal construction. Single and double action. It has a detachable 22mm weaver rail which fits to the top of the pistol, where you can fit a red dot sight, laser, etc.