(a) No person shall discharge an airgun within the park district. However, this section shall not apply to members of any military company when engaged in drilling or target practice under the command or direction of an officer thereof, or the use of airguns in the lawful defense of persons or property, or to shooting galleries operated in accordance with Park District ordinances relating thereto or to their use by law enforcement officers in the lawful discharge of their duty.
(b) The provisions of this section do not prohibit or render it unlawful to possess, use or furnish for use an airgun for purposes of instruction in firearm safety, care, handling or marksmanship under the supervision or control of a responsible adult.
(c) Whoever violates this section is guilty of a misdemeanor of the third degree.