Section 24-1 of the Illinois Criminal Code (720 ILCS 5/24-1) is the state's foundational weapons offense statute. It defines a broad range of conduct that constitutes the unlawful use of weapons (commonly referred to as "UUW"), covering everything from carrying firearms without proper authorization to possessing inherently prohibited weapons such as machine guns and short-barreled firearms.[1]
Prohibited Conduct -- General UUW
Section 24-1(a) enumerates over a dozen specific acts that constitute UUW. The most commonly charged provisions include carrying or possessing a firearm, stun gun, taser, or other deadly weapon on or about the person in any vehicle or concealed on or about the person, except on one's own land, in one's own abode, legal dwelling, or fixed place of business, or on the land or in the legal dwelling of another person with their permission. This provision is the statutory basis for most UUW charges in Illinois and reflects the state's general prohibition on carrying weapons in public without a Concealed Carry License (CCL).[1]
Other prohibited acts under Section 24-1(a) include carrying or possessing a firearm in any place licensed to sell alcohol, possessing a silencer or silencer-equipped firearm, possessing explosive bullets, and carrying a firearm in a concealed manner except as authorized by the Firearm Concealed Carry Act.[1]
Prohibited Weapons
Section 24-1(a) also criminalizes the possession of certain categories of weapons regardless of whether the person holds a valid FOID card or CCL. These include machine guns (any weapon that shoots automatically more than one shot without manual reloading by a single function of the trigger), short-barreled rifles with a barrel less than 16 inches, short-barreled shotguns with a barrel less than 18 inches, and any weapon made from a rifle or shotgun with an overall length less than 26 inches.[1]
Penalties
The penalty structure under Section 24-1 varies based on the specific conduct and the type of weapon involved:[2]
- General UUW (carrying without authorization, most subsections): Class A misdemeanor, punishable by up to 364 days in county jail and a fine of up to $2,500
- Second or subsequent UUW offense: Class 3 felony, punishable by 2 to 5 years in the Illinois Department of Corrections
- Machine gun possession: Class 2 felony, punishable by 3 to 7 years in prison
- Short-barreled rifle or shotgun possession: Class 3 felony, punishable by 2 to 5 years in prison
Key Exceptions
Section 24-1 does not apply to certain categories of persons and activities. Law enforcement officers, members of the armed forces acting in the line of duty, licensed security personnel, and holders of valid Concealed Carry Licenses are exempt from many of the general prohibitions. The statute also provides exceptions for transportation of unloaded firearms in cases, for persons at licensed shooting ranges, and for hunters with valid permits in appropriate areas.[1]
Interaction with Other Statutes
Section 24-1 serves as the base-level weapons offense in Illinois. More serious conduct is addressed by separate sections: aggravated UUW under Section 24-1.6, felon-in-possession charges under Section 24-1.1, and armed habitual criminal charges under Section 24-1.7. The Protect Illinois Communities Act (Public Act 102-1116) also amended portions of Article 24 to incorporate the statewide assault weapons ban, adding additional prohibited weapons categories and modifying existing penalty structures.[3]