A gun powered with CO2 is called CO2 bb gun. Its mechanism is based on CO2. In this bb gun CO2 gas is used to fire bbs. Such guns have disposable cylinder. When you buy a gas bb gun you are provided with a cylinder attached to the gun that is already filled with gas. This gas is liquid carbon dioxide. There are both cheap and expensive CO2 bb guns available in the market. Expensive CO2 bb guns have large reservoir of gas. So if you buy this expensive bb gun you don’t have to fill up the gas chamber at short intervals. There are some advantages associated with CO2. This bb gun type does not need pressure regulator. The vapor pressure in the tank does not depend on the size of the tank. It depends only on the temperature. In CO2 bb gun a little quantity of liquid gas produces a large volume of gas. The cost of this bb gun is also very reasonable. You may contact online stores that offer CO2 bb gun at affordable prices.
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