A person commits the offense of unlawful sale of firearms when he knowingly:
(A) Sells or gives any firearm to a person under 21 years of age who has been convicted of a misdemeanor other than a traffic offense, or adjudged delinquent; or
(B) Sells or gives any firearm to any narcotic addict; or
(C) Sells or gives any firearm to any person who has been convicted of a felony under the laws of this or any other jurisdiction; or
(D) Sells or gives any firearm to any person who has been a patient in a mental hospital within the past 5 years; or
(E) Sells or gives any firearm to any person who is mentally retarded; or
(F) Delivers any firearm of a size which may be concealed upon the person, incidental to a sale, without withholding delivery of the firearm for at least 72 hours after application for its purchase has been made, or delivers any rifle, shotgun, or other long gun, or a stun gun or taser, incidental to a sale, without withholding delivery of the rifle, shotgun, or other long gun, or a stun gun or taser for at least 24 hours after application for its purchase has been made. However, this division shall not apply to:
(1) The sale of a firearm to a law enforcement officer if the seller of the firearm knows that the person to whom he or she is selling the firearm is a law enforcement officer or the sale of a firearm to a person who desires to purchase a firearm for use in promoting the public interest incident to his employment as a bank guard, armed truck guard, or other similar employment; or
(2) A mail order sale of a firearm to a nonresident of Illinois under which firearm is mailed to a point outside the boundaries of Illinois; or
(3) The sale of a firearm to a nonresident of Illinois while at a firearm showing or display recognized by the Illinois department of state police; or
(4) The sale of a firearm to a dealer licensed as a federal firearms dealer under section 923 of the Federal Gun Control Act of 1968 (18 U.S.C. 923). For purposes of this division, APPLICATION means when the buyer and seller reach an agreement to purchase a firearm.
(G) While holding any license under the Federal Gun Control Act of 1968, as amended, as a dealer, importer, manufacturer, or pawnbroker, manufactures, sells or delivers to any unlicensed person a handgun having a barrel, slide, frame, or receiver which is a die casting of zinc alloy or any other nonhomogeneous metal which will melt or deform at a temperature of less than 800°F. For purposes of this paragraph,
(1) FIREARM is defined as in ILCS Ch. 430, Act 65, §§ 1 et seq.
(2) HANDGUN is defined as a firearm designed to be held and fired by the use of a single hand, and includes a combination of parts from which a firearm can be assembled.
(H) Division (G) of this section shall not include firearms sold within 6 months, after October 1, 1973, nor shall any firearm legally owned or possessed by any citizen or purchased by any citizen within 6 months after October 1, 1973, be subject to confiscation or seizure under the provisions of this section. Nothing in this chapter shall be construed to prohibit the gift or trade of any firearm if that firearm was legally held or acquired within 6 months after October 1, 1973.
(I) Unlawful sale of firearms is a misdemeanor.
(ILCS Ch. 720, Act 5, § 24-3) Penalty, see § 130.99