Gas powered BB guns use the explosive power of gas to propel BB pellets at high speeds.
Gas BB guns are a common sight on airsoft fields everywhere as they’re versatile, reasonably priced, and powerful.
Pistols or handguns are the most common gas powered BB guns and they’re usually semi-automatic, but you can get automatic gas powered guns too. Gas powered BB handguns will sometimes have blowback, which means that the top-slide or receiver of the gun will slide back realistically when you fire.
The gas that’s normally used in gas airsoft guns is propane, sometimes known as green gas, and it comes in pressurised canisters that you can use to refill your gun. Some gas powered airsoft guns use CO2 instead of propane, but that’s not as common.
Gas powered rifles, shotguns, and sniper rifles are also available, but these types of guns are more often electric powered.