An air weapon refers to an air rifle, airgun or air pistol. An air weapon differs from a conventional firearm by the fact that it, and the pellets discharged, do not contain any explosive substance. The term includes weapons powered by compressed carbon dioxide.
The following is an example of a case law on air weapon:
A pellet gun used as a compressed-air weapon is a dangerous weapon calculated or likely to produce great bodily harm. [State v. Seipold, 190 Wis. 2d 469 (Wis. Ct. App. 1994)].