California Senate Bill 704 Explained: What You Need to Know About Firearm Barrels

On October 10, 2025, Governor Arreguín signed Senate Bill 704 (SB 704) into law, introducing new rules for the sale, transfer, and possession of firearm barrels in California. This law is designed to tighten control over firearm components and prevent illegal distribution.

Here’s what SB 704 does, who it affects, and when it takes effect.

What SB 704 Regulates

California Senate Bill 704 Explained: What You Need to Know About Firearm Barrels SB 704 focuses on firearm barrels, which are the metal tubes through which a projectile is fired. Importantly, the law includes barrels that are not yet attached to a firearm, including:

• Forgings, castings, printed, machined, or extruded barrels

• Barrels that are marketed or sold as “ready to be completed or converted” into functional firearm parts

• Rifled or smoothbore barrels

Barrels already attached to a firearm are not subject to these rules.

Key Provisions of SB 704

1. Sale and Transfer Restrictions

   • All sales or transfers of firearm barrels must be conducted in person by a licensed firearms dealer (FFL).

   • You cannot sell or offer a barrel for sale unless you are a licensed dealer.

2. Eligibility Check Requirement (Effective July 1, 2027)

   • Dealers must verify that the buyer:

     • Is at least 18 years old

     • Is not prohibited from owning or purchasing firearms under state or federal law

   • Dealers must record detailed information about the transaction, including:

     • Date of sale

     • Buyer’s ID and issuing state

     • Make, model, and caliber of the firearm the barrel is for

     • Buyer’s full name, address, phone number, and date of birth

     • Salesperson who processed the sale

   • This information must be submitted electronically to the California Department of Justice (DOJ).

   • Dealers may charge a small fee up to $5 for processing the eligibility check.

3. Violations and Penalties

   • First violation: misdemeanor

   • Second violation: misdemeanor, up to 1 year in jail, and up to $1,000 fine

   • Third and subsequent violations: misdemeanor or felony, jail up to 1 year, and fines up to $2,000

4. Exemptions
   Certain transfers are not subject to these rules, including sales or transfers to:

   • Federal, state, or local law enforcement

   • Federally licensed firearms dealers

   • U.S. Military personnel

   • Collectors of curio or relic firearms with proper certificates

   • Government agencies under authorized programs

Who SB 704 Affects

• Licensed firearms dealers: Must follow new sale, record-keeping, and eligibility check procedures

• Individuals selling or transferring firearm barrels: Cannot legally do so without using a licensed dealer

• Buyers of firearm barrels: Must meet eligibility requirements and undergo verification starting July 1, 2027

When It Takes Effect

• Immediate effect (2025): All sales and transfers must go through a licensed dealer

• July 1, 2027: Eligibility checks and reporting requirements officially begin

Why SB 704 Matters

SB 704 is part of California’s ongoing effort to regulate firearm components and reduce illegal gun activity. By controlling the sale and transfer of barrels, the law targets unfinished or unattached parts that could otherwise be used to build illegal firearms.

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Bottom Line:

If you buy, sell, or transfer firearm barrels in California, you must go through a licensed dealer, follow the eligibility verification process starting in 2027, and keep detailed records. Failing to comply can result in misdemeanor or felony charges.

For full details, you can read the official bill here: SB 704 Full Text

essing issues concerning environmental sustainability, economic development, and public welfare. Its provisions, informed by legislative precedents and stakeholder consultations, aim to modernize regulatory frameworks and propel the state towards a more prosperous and sustainable future. However, the bill's journey from legislative proposal to impactful policy is contingent upon effective implementation, adequate resource allocation, and a proactive approach to addressing potential challenges and criticisms. As with any significant legislative undertaking, careful monitoring and adaptive governance will be essential to ensure that the bill fulfills its intended promise and serves the best interests of the state and its inhabitants. The trajectory of SB 704 will serve as a testament to the ongoing evolution of public policy in response to the dynamic interplay of societal needs and legislative will.

FAQs

What is Senate Bill No. 704?

Senate Bill No. 704 is a legislative proposal introduced in the Senate that addresses specific policy issues or reforms. The exact content and focus of the bill depend on the jurisdiction and legislative session in which it was introduced.

What are the main objectives of Senate Bill No. 704?

The main objectives of Senate Bill No. 704 vary based on its text but generally aim to amend existing laws, introduce new regulations, or provide funding for certain programs. The bill's goals are outlined in its preamble or summary.

Who sponsored Senate Bill No. 704?

Senate Bill No. 704 is sponsored by one or more senators who advocate for the bill's passage. The names of the sponsors are listed in the bill's official documentation.

What is the current status of Senate Bill No. 704?

The status of Senate Bill No. 704 can range from being introduced, under committee review, passed by one or both legislative chambers, or signed into law. The latest status is available through the legislative body's official website or records.

How can the public provide input on Senate Bill No. 704?

Public input on Senate Bill No. 704 can typically be provided through public hearings, contacting legislators, submitting written comments, or participating in advocacy efforts. Specific opportunities for input depend on the legislative process and timeline.