This is a great, historical air gun. They are not made any more but are still around on used gun sites. You will have trouble filling the provided CO2 tanks with the adapter since it was designed for the older paintball tanks. The best bet is to get one of the 12 gram CO2 cartridge adapters that are available. The gun is accurate and medium powerful. The sights are adjustable and functionable but, with a little ingenuity you can mount a pistol scope or a red dot on it. I am still testing mine out with different pellets and will post velocities when finished.