Background
In 2023, six months after a mass shooting at a Highland Park, Illinois Independence Day parade that killed seven and wounded dozens, Illinois enacted the Protect Illinois Communities Act. The Act criminalizes the manufacture, sale, delivery, purchase, and possession of assault weapons—including AR-15s—and large-capacity ammunition magazines (those holding more than ten rounds for rifles and shotguns). The Act includes grandfather clauses permitting individuals who lawfully possessed these items before enactment to continue possessing them, either through a registration process or without registration for magazines.
Plaintiffs including individual gun owners, firearms dealers, and Second Amendment advocacy organizations filed suit challenging the Act as violating the Second Amendment. The district court initially granted a preliminary injunction in the Barnett case but was overruled on appeal by this court in Bevis v. City of Naperville (2023), which held plaintiffs were unlikely to succeed on the merits. Following that precedent, the case proceeded to a bench trial where, in a significant reversal, the district court found the Act’s restrictions on assault weapons, large-capacity magazines, and the registration requirement violated the Second Amendment. The district court enjoined the Act in its entirety. State officials appealed.
The Court’s Holding
The Seventh Circuit reversed the district court and upheld the Act. Applying the two-step test established in New York State Rifle & Pistol Ass’n v. Bruen (2022), the court assumed for purposes of this decision that AR-15s and large-capacity magazines constitute “Arms” protected by the Second Amendment’s plain text. The dispositive question was whether Illinois’s restrictions are consistent with the nation’s historical tradition of firearm regulation.
The court held that they are. Drawing on a longstanding regulatory tradition spanning from pre-Founding going-armed laws through nineteenth-century restrictions on Bowie knives to modern machine gun bans, the court concluded that legislatures have consistently imposed targeted restrictions on particularly dangerous weapons. The court found AR-15s—which fire only semiautomatic—materially distinct from military M16s, which fire in automatic and burst modes. Large-capacity magazines, meanwhile, are not issued by the military for combat use. The court noted that every federal circuit to address the issue has reached the same conclusion, creating nationwide consensus that assault weapon and magazine bans are constitutional.
Key Takeaways
- Illinois’s ban on AR-15s and thirty-round rifle magazines does not violate the Second Amendment under the Bruen historical-tradition test.
- The nation’s long history of regulating dangerous weapons—from colonial going-armed laws through machine gun bans—supports restrictions on assault weapons.
- AR-15s are not constitutionally protected despite their semiautomatic firing mode because of material differences from military-issue weapons and their suitability for regulation under historical analogues.
- All six federal circuits to have ruled on assault weapon and large-capacity magazine bans have upheld them, establishing settled law on this issue.
- Grandfather clauses permitting pre-existing owners to retain regulated items survive constitutional challenge.
Why It Matters
This decision resolves a significant split between Illinois federal district courts that had reached different conclusions on identical legal claims. By reversing the district court’s permanent injunction, the Seventh Circuit provides states certainty that assault weapon bans modeled on federal law and state traditions can withstand Second Amendment challenge. The opinion’s emphasis on circuit consensus and the continuity between historical restrictions on dangerous weapons and modern regulations establishes a framework that other jurisdictions can rely upon when defending similar statutes.
For the Second Amendment landscape, the ruling clarifies that while the individual right to bear arms receives constitutional protection, it does not extend to all weapons without limit. The decision underscores that under Bruen, regulations need not have close founding-era counterparts but rather must fit within a broader historical tradition. This approach has proven durable across the federal judiciary, suggesting that assault weapon regulations—long a point of constitutional contention—are now legally settled as consistent with the Second Amendment.