Substitute House Bill No. 5043, effective October 1, 2026, significantly revises the regulation of convertible pistols and related firearms. The bill expands the definition of "machine gun" to include any convertible pistol equipped with a pistol converter, which allows a semiautomatic pistol to function as a machine gun. It also introduces a new definition for "convertible pistol" and clarifies the term "rate of fire enhancement." The bill imposes penalties for the importation, advertisement, sale, or exposure for sale of any convertible pistol manufactured after the effective date, categorizing these actions as a class D felony, while exempting retail sales or lawful transfers between individuals who are not licensed gun dealers. Additionally, it repeals and substitutes various sections of the general statutes to align with these new definitions and regulations.

The bill further addresses the sale and transfer of unfinished frames or lower receivers, requiring that these transactions follow the same procedures as those for pistols or revolvers, including the necessity of a unique serial number obtained through the federal Bureau of Alcohol, Tobacco, Firearms and Explosives' serial numbering program. It establishes penalties for violations as class C felonies and outlines conditions for suspending prosecution for minor violations. The bill also updates the definitions of "firearm industry product" and "unfinished frame or lower receiver," and introduces a process for individuals to surrender firearms or ammunition to the Commissioner of Emergency Services and Public Protection. Additionally, it amends the fees and processes associated with the issuance and renewal of permits for carrying pistols and revolvers, establishing a fee structure and clarifying the expiration and renewal terms for various permits.

Statutes affected:
JUD Joint Favorable Substitute: 53-206j, 29-36b
File No. 597: 53-206j, 29-36b
File No. 717: 53-206j, 29-36b
Public Act No. 26-41: 53-206j, 29-36b