Not exactly cheap as air guns go, the newer BB and pellet shooting cartridge guns are about $150 +. I like the cartridges to put the BB or pellet in the back of. The cartridge has a sort of nylon rifled tube through the middle. Using a 12g Co2 cartridge inside the grip area to fire them through the cartridge and down the barrel. I have the Umarex/Colt SAA in .177 pellet cartridge with 5 1/2" barrel. It has some heft to it as I weighed it on my scale at 2lbs, 1oz. It has the Colt logo and patent dates on it as well! I had the black grips with the, " Colt Peacemaker" badge on it originally;
And the cartridges that take .177cal pellets in the back end;
And now with the Umarex faux ivory grips and Clint's snakes. All the Umarex/Colt SAA grips interchange...