Colorado 2026 Regular Session

Colorado Senate Bill SB043

Introduced
1/27/26  
Refer
1/27/26  
Report Pass
2/12/26  
Refer
2/12/26  
Engrossed
3/9/26  
Refer
3/9/26  
Report Pass
3/16/26  

Caption

Record Keeping & Regulation of Sale of Firearm Barrel

Summary

SB043 regulates the sale and transfer of firearm barrels in Colorado. It requires that firearm barrels be sold or transferred in person by a federally licensed firearm dealer, and it makes it unlawful for non-dealers to possess a barrel with the intent to sell or offer it for sale or transfer. The bill also limits purchases to people who are at least 18 years old and otherwise legally eligible to possess or buy firearms under state and federal law, with specified exceptions for family transfers, law enforcement, military, antique firearms, curio and relic collectors, estate transfers, certain government buyback programs, and educational gunsmithing programs. The bill adds record-keeping requirements for licensed dealers. Dealers must record identifying information about the transaction on a Colorado Bureau of Investigation form and retain those records for at least five years. The CBI is directed to create the form. The bill also amends existing dealer-oversight law so that failure to make the required barrel-sale record can be treated as a licensing violation, alongside other firearm-sales compliance failures. The act takes effect July 1, 2026, and applies to offenses committed on or after that date.

Impact

SB043 would create a new section in Colorado criminal law governing firearm barrel sales and transfers, establishing new offenses for unlawful sale, unlawful possession with intent to sell, and unlawful purchase of a firearm barrel. It would also expand the regulatory duties of federally licensed firearm dealers by imposing transaction-record requirements and a five-year retention period, and it would give the Colorado Bureau of Investigation responsibility for designing the required recordkeeping form. In addition, it would tie noncompliance with the new barrel-record rules to existing dealer discipline provisions under Colorado’s firearm dealer regulation statutes.

Sentiment

The available vote history suggests the bill was controversial and faced substantial resistance, especially in the House. It advanced out of the Senate on narrow margins after an initial committee split, and the Senate third reading passed by only one vote. In the House, the bill’s committee referral passed comfortably, but multiple floor amendments failed and the measure drew significant opposition in committee-of-the-whole votes, indicating a divided chamber and a contentious policy debate. The lack of committee transcript detail limits more specific sentiment analysis, but the voting pattern shows support was present while opposition was strong and organized.

Contention

The main point of contention appears to be whether firearm barrels should be regulated like other firearm components and whether the state should impose dealer-only, in-person transfer rules plus criminal penalties for barrel sales. Supporters likely view the bill as a public-safety and traceability measure that closes a loophole in firearm-part regulation, while opponents likely object to expanding firearm regulation to a component that is not itself a complete firearm and to the added compliance burden on dealers and private parties. The failed House amendments and close Senate votes suggest disagreements over the scope of the restrictions, the exceptions, and the criminal and civil penalties.

Companion Bills

No companion bills found.

Previously Filed As

CO SB003

Semiautomatic Firearms & Rapid-Fire Devices

CO HB1133

Requirements for Sale of Firearms Ammunition

CO SB034

Voluntary Do-Not-Sell Firearms Waiver

CO SB205

Firearm Serial Number Check Request Procedure

CO HB1062

Penalty for Theft of Firearms

CO HB1055

Repeal Firearm Dealer Requirements & State Permit

CO HB1128

Income Tax Credit for Firearm Safety Device

CO SB072

Regulation of Kratom

CO HB1209

Marijuana Regulation Streamline

CO HB1076

Motor Vehicle Regulation Administration

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