No, you cannot legally own a suppressor in Illinois as a civilian. State law classifies suppressors as prohibited weapons under 720 ILCS 5/24-1(a)(6), and possession is a Class 3 felony carrying two to five years in prison.1Justia Law. Illinois Code 720 ILCS 5 – Article 24 Deadly Weapons Completing the federal ATF registration process does not change that. Illinois is one of only eight states that still ban civilian suppressor ownership outright.
What the Ban Actually Covers
The statute reaches “any device or attachment of any kind designed, used or intended for use in silencing the report of any firearm.”1Justia Law. Illinois Code 720 ILCS 5 – Article 24 Deadly Weapons That language is broad. It covers complete suppressors, individual components, and parts intended for assembly. There is no carve-out for hunting, target shooting, or hearing protection.
A valid federal tax stamp is not a defense. If you hold an approved ATF Form 4 registration for a suppressor and bring that device into Illinois, you are committing a state felony. The ATF, for its part, will not approve a Form 4 transfer where possession would violate state law, so an Illinois resident cannot lawfully complete the federal process in the first place.
This trips people up because every state bordering Illinois — Indiana, Wisconsin, Iowa, Missouri, and Kentucky — allows civilian suppressor ownership.
Prison Time and Location Enhancements
A first offense is a Class 3 felony with a sentencing range of two to five years, extendable to five to ten years with an extended-term finding.2Illinois General Assembly. 730 ILCS 5/5-4.5-40 – Class 3 Felony Judges can add fines on top of the prison sentence.
The charge jumps to a Class 2 felony with a mandatory three to seven years if possession occurs in or near certain protected places:
- Inside a school building or on school grounds, at any time of day or year
- Residential property owned or managed by a public housing agency
- Parks, courthouses, or public transportation vehicles
- Any public way within 1,000 feet of a school, park, courthouse, public transit facility, or public housing property
The enhancement applies whether the suppressor is attached to a firearm or stored separately.1Justia Law. Illinois Code 720 ILCS 5 – Article 24 Deadly Weapons The 1,000-foot proximity zones are wide enough that much of any Illinois city falls inside at least one of them.
What Else a Conviction Costs You
A felony conviction under Article 24 triggers automatic revocation of your Firearm Owner’s Identification card.3Illinois State Police. FOID Court Ordered Relief Required Without a FOID card, you cannot legally possess any firearm or ammunition in Illinois. Getting one back is not routine paperwork: you must petition the circuit court in your county of residence for relief, and the court has full discretion to deny the petition. Even a favorable court order does not guarantee reinstatement, because the Illinois State Police conducts its own separate review.
Vehicles are exposed too. Under 720 ILCS 5/36-1, a vehicle used in the aggravated discharge of a firearm equipped with a silencer is subject to seizure and permanent forfeiture.4Illinois General Assembly. 720 ILCS 5/36-1 – Seizure and Forfeiture of Vehicles The state only has to prove the forfeiture case by a preponderance of the evidence. An innocent co-owner must affirmatively prove they had no knowledge the vehicle would be used in the offense.
The Narrow Exemptions
Two categories of people can lawfully possess a suppressor in Illinois. Neither covers ordinary civilians.
Tactical and Special Operations Officers
Peace officers serving on a tactical response team or special operations team are exempt while performing official duties.1Justia Law. Illinois Code 720 ILCS 5 – Article 24 Deadly Weapons The exemption is narrower than people assume. Rank-and-file patrol officers, corrections personnel, retired officers, and military members stationed in Illinois do not automatically qualify.
Federally Licensed Manufacturers
Companies holding a federal manufacturing license for suppressors may possess them in Illinois, but only within the lawful scope of the business — manufacturing, transportation, and testing. The statute expressly states the exemption “does not authorize the general private possession” of suppressors. During transport, the suppressor must be kept detached from any firearm or stored so it is not immediately accessible.1Justia Law. Illinois Code 720 ILCS 5 – Article 24 Deadly Weapons
Private security, competitive shooters, hunters, and firearms instructors have no exemption.
Driving Through Illinois With a Legally Owned Suppressor
If you live in a state where suppressors are legal and your route passes through Illinois, federal law offers a limited protection worth understanding, and worth not overestimating.
18 USC 926A protects the interstate transport of firearms between two places where possession is lawful, provided the firearm is unloaded and neither the firearm nor ammunition is readily accessible from the passenger compartment. In vehicles without a separate trunk, the item must be in a locked container other than the glove box or console.5GovInfo. 18 USC 926A – Interstate Transportation of Firearms Because the National Firearms Act classifies suppressors as firearms, this protection should extend to a suppressor being carried from, say, Indiana to Iowa across Illinois.
In practice, this is a defense you assert after an arrest, not a shield that prevents one. Illinois officers may not recognize the federal protection at the roadside, and stopping in Illinois for anything beyond fuel or an emergency — an overnight stay, a visit, running errands — likely defeats the safe-passage argument entirely. State guidance on transporting firearms addresses ordinary firearms and ammunition but does not specifically address suppressor transit.6Illinois State Police. Transporting Your Firearm Legally If you must drive through, keep the suppressor in a locked hard-sided case in the trunk, fully detached from any firearm, and do not stop.
Will the Law Change Soon
Two efforts are underway, and neither has changed the current law.
Anderson v. Raoul (Case No. 3:23-cv-00728, S.D. Ill.) challenges the suppressor ban under the Second Amendment. It was filed with backing from the American Suppressor Association and Silencer Shop and remains pending.
In the legislature, Senate Bill 297 was introduced in January 2025 by a group of Republican senators. It would strike the suppressor prohibition from 720 ILCS 5/24-1(a)(6) outright.7LegiScan. IL SB0297 2025-2026 104th General Assembly As of early 2026, the bill sits in the Senate Assignments Committee without a hearing.
Until a court strikes the statute down or the legislature repeals it, civilian suppressor possession in Illinois remains a felony.