"Firearm" means any handgun, rifle, shotgun, or similar device or weapon which will or can be converted to expel a projectile by the action of an explosive or electrical charge and includes stun guns and tasers as defined by subsection (a) of Code Section [...]

"Firearm" means any rifle, shotgun, pistol, or similar device which propels a projectile or projectiles through the energy of an explosive. (B) If the property which was the subject of the theft offense was a destructive device, explosive, or firearm, by [...]