Any other weapon. - The term "any other weapon" means any weapon or device
capable of being concealed on the person from which a shot can be discharged through
the energy of an explosive, a pistol or revolver having a barrel with a smooth bore
designed or redesigned to fire a fixed shotgun shell, weapons with combination
shotgun and rifle barrels 12 inches or more, less than 18 inches in length, from
which only a single discharge can be made from either barrel without manual
reloading, and shall include any such weapon which may be readily restored to fire.
Such term shall not include a pistol or a revolver having a rifled bore, or rifled
bores, or weapons designed, made, or intended to be fired from the shoulder and not
capable of firing fixed ammunition.
According to the actual rule on an AOW, as long as the barrel is not between 12"-18", it is not classified as an AOW. This is my interpretation at least.
Kris