Can I Build an AR-15 in Illinois?
Woody's answers are based on published federal and state law. Not legal advice. Consult a licensed attorney for your specific situation.
You can build an AR-15 in Illinois, but it must comply with state assault weapon restrictions. The rifle cannot have certain prohibited features like a detachable magazine combined with specific characteristics.
What This Means for You
Illinois has specific laws governing assault weapons that directly impact AR-15 builds. The state defines assault weapons based on feature combinations rather than just the platform itself. Understanding these restrictions is crucial before starting any build to ensure compliance with state law.
The Detail
Illinois law generally prohibits assault weapons, but defines them through specific feature combinations rather than blanket platform bans. For AR-15 builds, this typically means you cannot have a detachable magazine combined with certain features like a pistol grip, telescoping stock, flash hider, or grenade launcher mount. The key is understanding that it's the combination of features that creates the legal issue, not the AR platform itself.
Your build options include creating a fixed magazine rifle or ensuring your detachable magazine rifle doesn't have the prohibited feature combinations. Fixed magazine solutions involve permanently modifying the rifle so the magazine cannot be removed without disassembling the action. This approach removes the detachable magazine element from the feature test entirely.
Another consideration is the distinction between rifles and pistols in your build. AR pistol builds face additional complexity under Illinois law, as the state has specific regulations around handguns that may apply differently than rifle regulations. The overall length and intended configuration of your build will determine which set of regulations apply.
Before starting any build, you should verify current Illinois statutes as firearms laws can change. The specific definitions and prohibited combinations should be confirmed through official state resources or legal counsel familiar with Illinois firearms law. What might be compliant today could change with new legislation.
Build Impact
These restrictions significantly limit your parts selection and configuration options compared to free states. You'll need to carefully plan your build around compliance rather than just performance or aesthetics, potentially requiring specialized compliance parts or modifications.