The Wire · CalGunHub

California DOJ summarizes new laws on firearm barrels and manufacturing machines

Published October 6, 2026 · Updated October 6, 2026

The California Department of Justice published an information bulletin detailing new regulations for firearm barrels, manufacturing machines, and accessories that took effect on January 1, 2026.

Summary by the CalGunHub desk.

Who this affects: Under the summarized laws, the purchase of an unattached firearm barrel requires an in-person transaction through a licensed firearms dealer. The delivery of firearm accessories, manufacturing machines, and barrels involves age verification and identification checks for California residents. Furthermore, individuals convicted of specific misdemeanor offenses, including the unlawful possession of an assault weapon, face a 10-year prohibition on possessing firearms and ammunition in the state.

On December 23, 2025, the California Department of Justice Division of Law Enforcement issued Information Bulletin 2025-DLE-18. The document summarizes the provisions of Assembly Bill 1263 and Senate Bill 704, which took effect on January 1, 2026. The bulletin serves as a final informational summary of the enacted legislation.

The bulletin outlines new requirements for the sale of firearm barrels, mandating that transfers of unattached barrels be completed in person by a licensed firearms dealer. It notes that starting July 1, 2027, individuals acquiring firearm barrels will be subject to eligibility checks and electronic records of sale.

Additionally, the document details updated definitions under the Firearm Industry Responsibility Act for "firearm accessory" and "firearm manufacturing machine." The expanded definitions include machines designed to manufacture firearm components and attachments that increase a rate of fire. The bulletin states that firearm industry members must provide consumer notices, verify purchasers are at least 18 years of age, and require identification upon delivery for these items.

The publication also describes a new criminal offense for aiding or facilitating the unlawful manufacture of firearms. It lists nine additional misdemeanor offenses that now result in a 10-year prohibition on firearm and ammunition possession, including offenses related to undetectable firearms and the unlawful possession of assault weapons. The document notes, "This bulletin is for informational purposes only."

Reproduced from the official source.

Informational only, not legal advice. Facts are attributed to the sources listed above.