As used in this chapter, the following terms shall have the meanings indicated:
Any gun, shotgun, rifle, pistol, revolver or other device, including air guns, from which a bullet, shot, ball, slug, pellet, solid projectile or other missile, or any gas, vapor or other noxious thing, is propelled by means of a cartridge or shell or by the action of an explosive or the igniting of flammable or explosive substances.