Gas gun
# Gas gun

A gas gun may refer to:

* A projectile-firing gun powered by compressed air:
   * Air gun
   * Airsoft gun (in particular a gas blowback airsoft gun)
* Devices described as pneumatic cannons:
   * Dynamite gun
   * Holman Projector
   * M61 Vulcan (also hydraulically operated)
   * Potato cannon
* Certain non-lethal or less-lethal firearms:
   * Gas pistol
   * Riot gun, especially when loaded with CS gas grenades
   * Vortex ring gun
* A gun that fires a stream of gas. This can be for these purposes among others:
   * To generate a loud noise as a bird scarer
   * For astronaut propulsion in outer space
   * Light-gas gun, a velocity-generating device used in physics experiments
* A gas-operated firearm mechanism
