Why HB4471 Matters Right Now
Illinois lawmakers have introduced HB4471, formally titled the Responsible Gun Manufacturing Act, but widely known as the “Glock Ban Bill.” The nickname isn’t accidental — while the bill never mentions “glock” by name, its definitions and restrictions apply almost exclusively to Glock‑pattern pistols and any handgun that can accept a Glock switch (auto sear).
For Illinois gun owners, FFLs, law enforcement, and responsible citizens, understanding this bill is essential. Below is a simple but extremely detailed explanation of what HB4471 actually does.
What HB4471 Is Designed to Do
HB4471 targets one specific issue: Pistols that can be easily converted into machine guns using a switch.
To accomplish this, the bill creates a brand‑new legal category called a “convertible pistol.”
What Counts as a “Convertible Pistol” Under HB4471
A handgun becomes a convertible pistol if it meets all of the following:
1. It is semiautomatic
This includes most modern defensive pistols.
2. It uses a cruciform trigger bar
This is a key design feature of Glock‑pattern pistols.
3. It can be readily altered to fire automatically
This includes:
- Attaching a Glock switch
- Removing a small tab or block added by the manufacturer
- Using common household tools to make the modification possible
Even if a manufacturer adds a “preventative” feature, the pistol is still considered convertible if that feature can be removed with basic tools.
What this means in practice
This definition overwhelmingly applies to:
- Glock pistols
- Glock‑compatible frames
- Glock‑pattern aftermarket builds
- Some striker‑fired pistols with similar internal geometry
It does not apply to:
- Hammer‑fired pistols
- DA/SA pistols
- Revolvers
This is why critics say the bill is a de facto Glock ban.
What HB4471 Makes Illegal
HB4471 prohibits the following actions involving any “convertible pistol”:
- Manufacturing
- Selling
- Offering for sale
- Importing
- Purchasing
- Receiving
- Transferring
This applies to:
- FFLs
- Private sellers
- Online sales
- Person‑to‑person transfers
- New and used pistols
Possession is not banned, but the bill makes it nearly impossible to legally buy or sell many Glock models in Illinois.
Penalties Under HB4471
HB4471 uses civil penalties, not criminal charges — but they’re steep.
First Violation
- $10,000 civil fine
- ISP may suspend or revoke the dealer’s license
Second Violation
- $25,000 civil fine
- ISP must revoke the dealer’s license
All penalties require a hearing under the Firearm Dealer License Certification Act.
HB4471 Also Expands the Definition of a Machine Gun
Under the bill, a pistol becomes a machine gun if:
- It is a convertible pistol and
- It is equipped with a switch
This means:
- A Glock with a switch = legally a machine gun
- Possession becomes a serious felony under existing Illinois law
This is one of the most impactful parts of the bill.
Exemptions
The bill includes exemptions for:
- Law enforcement
- Military
- Certain government agencies
Civilian exemptions are not included.
Why It’s Called the “Glock Ban Bill”
Even though Glock is never mentioned, the bill’s criteria:
- Target Glock’s internal design
- Target Glock’s trigger bar geometry
- Target Glock’s compatibility with switches
- Target aftermarket Glock frames and builds
Because Glock is the most popular handgun brand in America, the bill would:
- Restrict the sale of many Glock models
- Reduce the resale value of existing pistols
- Limit options for concealed carriers and first responders
- Impact FFLs statewide
For many Illinois gun owners, this feels like a backdoor handgun ban.
House Committee Amendment No. 1: What We Know
Filed on March 17, 2026, the amendment has not yet been adopted. Typical Illinois committee amendments:
- Clarify definitions
- Add or modify exemptions
- Adjust penalties
- Refine enforcement language
Until adopted, the amendment does not change the bill’s core text.
Current Status of HB4471 (March 2026)
- Filed: January 16, 2026
- Assigned to Gun Violence Prevention Committee: March 12, 2026
- House Committee Amendment No. 1 filed: March 17, 2026
- Bill is active and moving through committee
What Illinois Gun Owners Should Know
HB4471 does not ban ownership of Glock pistols. But it does:
- Ban future sales
- Ban transfers
- Ban purchases
- Ban dealer inventory movement
- Expand machine gun definitions
- Create major civil penalties
For many Illinois residents, this bill represents one of the most significant handgun restrictions in state history.
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