airgun

An air gun is any kind of small arms that propels projectiles by means of mechanically pressurized air or other gas (shooting involves no chemical reaction), in contrast to explosive propellant of a firearm (shooting involves an exothermic chemical reaction). Both the rifle and handgun forms (air rifle and air pistol) typically propel metallic projectiles, either the non-spherical pellets, or the spherical BBs. Certain types of air guns (usually rifles) may also propel arrows or darts.

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