(A) A person commits the offense of unlawful possession of firearms or firearm ammunition when:
(1) He or she is under 18 years of age and has in his or her possession any firearm of a size which may be concealed upon the person;
(2) He or she is under 21 years of age, has been convicted of a misdemeanor other than a traffic offense or adjudged delinquent and has any firearms or firearm ammunition in his or her possession;
(3) He or she is a narcotic addict and has any firearms or firearm ammunition in his or her possession;
(4) He or she has been a patient in a mental hospital within the past five years and has any firearms or firearm ammunition in his or her possession;
(5) He or she is a person with an intellectual disability and has any firearms or firearm ammunition in his or her possession; or
(6) He or she has in his or her possession any explosive bullet. For the purposes of this section,
EXPLOSIVE BULLET means the projectile portion of an ammunition cartridge which contains or carries an explosive charge which will explode upon contact with the flesh of a human or an animal. CARTRIDGE means a tubular metal case having a projectile fixed at the front thereof and a cap or primer at the rear end thereof with the propellent contained in the tube between the projectile and the cap.
(B) Unlawful possession of firearms, other than handguns, and firearm ammunition is punishable under § 137.99(A) of this chapter. Unlawful possession of handguns is a felony punishable under appropriate state law.
(720 ILCS 5/24-3.1) (2000 Code, § 137.03) Penalty, see § 137.99