The provisions of the preceding Section 5-7-2 as to the use of any firearm shall not apply to any of the following cases:
A. Police, Etc.: To police officers, sheriffs, constables, marshals or other police officers, or any person summoned by any such officers to assist in making arrests or preserving the peace, or persons who are members of the armed services of the United States, or the National Guard, while such persons are acting in the lawful discharge of their duties.
B. Self Defense: To persons using firearms in the lawful defense of self, third persons, or the user's property.
C. Target Range: To persons discharging or firing such firearms or causing them to be discharged or fired at a regularly established firing, shooting or target range with the consent of the owner or person in charge of any such firing, shooting or target range. The term "regularly established firing, shooting or target range" as used in this subsection includes properly constructed indoor or outdoor home ranges on private property when such range is supervised by an adult, and when a permit to construct and operate such range has been granted by the Chief of Police. (Ord. 225 N.S., 3-16-1964)