A great copy of Webley The Winchester 4.5 Special is a co2 operated 8 shot air pistol that will shoot .177 air rifle pellets through a rifled steel barrel, furthermore the Winchester 4.5 Special is also a single or double action meaning you can cock the hammer back on the pistol to take away the first stage of trigger pull, or use it as a double action meaning the air pistol will fire as fast as you can pull the trigger.