Possession of a Weapon By a Felon in Chicago

A felony conviction does not just cost time behind bars. In Illinois, it also takes away your right to own or carry a firearm. If police or prosecutors believe you broke that rule, you could face a charge, commonly called felon in possession of a firearm or unlawful possession of a weapon by a felon.

This charge carries a mandatory prison sentence, even for a first offense. At Ktenas Law, our team of former Cook County and Will County prosecutors builds gun charge defenses that start with the same question the state has to answer: can prosecutors actually prove every part of this charge?

Is It Illegal for a Felon to Have a Gun in Illinois

Yes. Under Illinois law, a person convicted of a felony, whether in Illinois or in any other state or federal court, cannot knowingly possess a firearm, firearm ammunition, or certain other prohibited weapons. This applies whether the item is on your person, in your car, in your home, or at your business. It does not matter who purchased the gun, whether you intended to use it, or whether it technically belongs to someone else in the house. The one built-in exception is for someone who has already been granted relief by the Illinois State Police Director under the Firearm Owners Identification Card Act. Short of that formal relief, possession alone is enough to support this charge.

This is different from a general unlawful use of a weapon charge, which can apply to anyone regardless of criminal record. This page covers the specific, more serious charge that applies once a felony conviction is already on your record.

What Counts as Unlawful Possession Under This Law

Illinois law refers to this offense two ways: unlawful use of a weapon by a felon and unlawful possession of a weapon by a felon. Both point to the same statute, 720 ILCS 5/24-1.1(opens in a new tab). Prosecutors do not have to prove you fired the gun or even touched it at the moment police found it.

Illinois recognizes two kinds of possession:

• Actual possession means the firearm was on your body, such as in a pocket or waistband.
• Constructive possession means the firearm was found somewhere you controlled, such as a car’s glove compartment or a bedroom nightstand, even if it belonged to someone else or you were not the one who put it there.

Constructive possession cases are often harder for the state to prove, since prosecutors have to connect a specific person to a specific weapon in a specific location, not just point to where the gun turned up.

Prosecutors do not have to prove you fired the gun or even touched it. Our gun charge defense page explains how constructive possession works.

Possible Penalties for Felon in Possession of a Firearm

Illinois treats every violation of this law as a felony. The exact classification depends on your record and the circumstances of the arrest:

• A first offense, for someone not confined in a penal institution, is a Class 3 felony carrying 2 to 10 years in prison.
• A second or later violation is a Class 2 felony carrying 3 to 14 years in prison.
• A first offense can also become a Class 2 felony, carrying that same 3 to 14-year range, if the prior conviction was a forcible felony, a weapons or Firearm Owners Identification Card Act violation, stalking or aggravated stalking, or a Class 2 or higher drug felony.
• Being on parole or mandatory supervised release at the time police found the gun also raises the charge to a Class 2 felony.
• Possessing a machine gun while not confined in a penal institution raises the charge to a Class X felony, Illinois’ most serious felony class short of murder.

Because the statute sets a specific prison term for each of these tiers, judges generally do not have the option to sentence someone to probation once a conviction is entered. That is one reason an early, thorough defense matters so much.

If someone has two or more prior convictions for a forcible felony or certain other serious offenses, prosecutors may instead pursue a related charge: unlawful possession of a firearm by a repeat felony offender under 720 ILCS 5/24-1.7, often called being an armed habitual criminal. That charge is a Class X felony on its own.

What Prosecutors Have to Prove

To convict someone under this law, the state has two separate jobs. First, prosecutors must prove a qualifying prior felony conviction exists, whether that conviction happened in Illinois, another state, or federal court. Second, they must prove knowing possession of a firearm, firearm ammunition, or a prohibited weapon at the time and place charged.

If the state cannot prove either part beyond a reasonable doubt, the charge does not hold up. A charge is not a conviction, and the right defense depends on the specific facts of the arrest, the evidence collected, and how that evidence was gathered.

How Our Attorneys Approach a Gun Possession Defense

Every gun possession case turns on the details, and our attorneys review each one the way a prosecutor would before deciding on a strategy. Common areas we look at include:

• Whether police had a valid basis to stop, search, or enter the property where the gun was found, since evidence from an unlawful search can sometimes be excluded.
• Whether the state can actually prove actual or constructive possession, especially in cases involving a shared car, home, or bag.
• Whether the prior felony conviction the state is relying on was entered correctly and truly qualifies under this statute.
• Whether Firearm Owners Identification Card records, gun ownership paperwork, or the chain of custody for the weapon raise questions the state has to answer.

Nick Ktenas, one of our founding partners and a former Cook County felony prosecutor, built his reputation auditing exactly this kind of evidence: search records, officer paperwork, and chain-of-custody documentation. That background now works for our clients instead of the state.

What to Do After a Gun Charge Arrest in Illinois

1. Stay silent beyond providing your name and basic identification. Anything else you say can become evidence.
2. Do not consent to a search of your car, home, or belongings beyond what officers are already legally allowed to search.
3. Write down what you remember about the stop or search as soon as you safely can, including officer names, badge numbers, and the order of events.
4. Contact a defense attorney before your first court date, ideally before any bond hearing.
5. Avoid discussing your case, the gun, or the arrest on social media or with anyone besides your attorney.

Where Gun Possession Cases Are Heard in Cook and Will County

Most felony gun possession arrests in Chicago and the south suburbs start at a branch courthouse near where the arrest happened, for an initial bond hearing. From there, felony matters like this one typically move to the George N. Leighton Criminal Court Building at 26th Street and California Avenue in Chicago, where Cook County handles felony arraignments, hearings, and trials.

If the arrest happened in the Frankfort or New Lenox area, the case may instead proceed through the Will County Courthouse in Joliet. Alex Ktenas spent years as a Cook County prosecutor in both the Chicago and Markham courthouses, and Lauren Ktenas previously prosecuted felony matters in Will County. That combined background means our attorneys already know the courtrooms, the local prosecutors, and how these cases typically move through the system.

When a Prior Conviction Puts Your Freedom on the Line Again

A felon in possession charge often lands on someone who is already rebuilding a life after a past conviction. The mandatory prison exposure in this statute means the stakes are high from the moment charges are filed, not just at sentencing. Our attorneys handle these cases with the same precision we bring to every case in our practice, reviewing the search, the evidence, and the record for every opening the law allows.

Talk to a Chicago Gun Charge Defense Team Today

If you or someone you love is facing a felon in possession charge in Cook County, Will County, or the surrounding area, do not wait to get answers. Call Ktenas Law (312) 800-1626 for a free case review, or reach out through our contact form to talk with our team about what happens next.