As used in this chapter, the following terms shall have the meanings indicated:
Any look-alike, nonfiring, collector replica of a firearm developed prior to 1898.
Any individual who is under 18 years of age.
Any imitation of any original firearm that was manufactured, designed and produced since 1898, including water guns, replica non-guns, air-soft guns firing nonmetallic projectiles, and BB, paintball, and pellet-firing air guns that expel a projectile through the force of air pressure, or any other object or device reasonably capable of being mistaken for a firearm. The term "toy gun" does not include any antique firearm as defined in this chapter.