Got a firearm but can't afford the ammo and the range fees to get in enough trigger time? Gamo's GP-20 Combat CO2 BB pistol will help your proficiency- plus you'll have a blast shooting tin cans- paper targets and more. Gamo GP-20 Combat pistol Semiauto up to 122 m/s Uses a 12-gram CO2 cartridge 20rd removable BB stick magazine Fixed fiber optic rear sight Fixed white dot front sight Weaver accessory rail under the barrel Textured rubberized grips