Gas gun, also known as a gas pistol, is a weapon that uses compressed gas to fire projectiles. It is a common tool used in various industries, including construction, mining, and law enforcement. Despite its usefulness, gas guns have several synonyms. One common synonym for a gas gun is a gas-powered gun, which is used to describe firearms that rely on gas pressure to function. Another synonym is a CO2 gun, which is a type of gas gun that operates using carbon dioxide as a propellant. Lastly, some people refer to gas guns as airsoft guns, which are typically used for recreational activities like target shooting or role-playing games.