Bill Commons

CA AB 1263

enacted

Firearms: ghost guns.

California · 2025-2026 Regular Session · lower

Quick answers

Did CA AB 1263 pass?

Yes. CA AB 1263 has been enacted into law as of 2025-10-11. Latest recorded action (2025-10-11): Chaptered by Secretary of State - Chapter 636, Statutes of 2025.

What is CA AB 1263 about?

Existing law makes it a crime for a person to manufacture or cause to be manufactured specified firearms. Existing law prohibits a person, other than a state-licensed firearms manufacturer, from using a computer numerical control (CNC) milling machine or three-dimensional printer to manufacture a firearm. This bill would prohibit a person from knowingly or willfully causing another person to engage in the unlawful manufacture of firearms or knowingly or willfully aiding, abetting, prompting, or facilitating the unlawful manufacture of firearms, including the manufacture of assault weapons or .50 BMG rifles or the manufacture of any firearm using a three-dimensional printer or CNC milling machine, as specified. The bill would make a violation of these provisions a misdemeanor. By creating a new crime, this bill would create a state-mandated local program. Existing law authorizes a civil action against a person who knowingly distributes or causes to be distributed any digital firearm manufacturing code to any person, except as specified. For these purposes, existing law defines "digital firearm manufacturing code" to mean any digital instructions in the form of computer-aided design files or other code or instructions that may be used to program a CNC milling machine, a three-dimensional printer, or a similar machine to manufacture or produce a firearm, including a completed frame or receiver or a firearm precursor part. Existing law authorizes the Attorney General, county counsel, or city attorney to bring an action against this person and seek a civil penalty, as specified, for each violation, as well as injunctive relief. This bill would include computer-aided manufacturing files as a digital instruction and include the manufacture or production of a machinegun and specified firearm components, including large-capacity magazines, as part of the definition of digital firearm manufacturing code. The bill would also authorize a person who has suffered harm in California as a result of a violation of these provisions to seek compensatory damages and injunctive relief. The bill would create a rebuttable presumption that a person violated the provision of unlawfully distributing or causing to be distributed any digital firearm manufacturing code if the person owns or participates in the management of an internet website that makes digital firearm manufacturing code available for purchase, download, or other distribution to individuals, and the internet website, under the totality of the circumstances, encourages individuals to upload, disseminate, or use digital firearm manufacturing code to manufacture firearms, as specified. Existing law establishes a firearm industry standard of conduct, which requires a firearm industry member, as defined, to establish, implement, and enforce reasonable controls, as defined, and to take reasonable precautions to ensure that the member does not sell, distribute, or provide a firearm-related product, as defined, to a downstream distributor or retailer of firearm-related products who fails to establish, implement, and enforce reasonable controls. For these purposes, existing law defines firearm accessory and firearm manufacturing machine. This bill would require, prior to completing the sale or delivery in California or to a California resident of a firearm barrel that is unattached to a firearm, firearm accessory, or a firearm manufacturing machine, a firearm industry member to comply with specified requirements, including providing a prospective purchaser with clear and conspicuous notice that specified conduct is generally a crime in California, including manufacturing firearms to be sold or transferred to an individual without a license to manufacture firearms. Existing law, subject to exceptions, provides that any person who has been convicted of certain misdemeanors may not, within 10 years of the conviction, own, purchase, receive, possess, or have under their custody or control any firearm and makes a violation of that prohibition a crime. This bill would also prohibit any person convicted of specified misdemeanor violations, including manufacturing an undetectable firearm or knowingly or willfully causing another person to engage in the unlawful manufacture of firearms, on or after January 1, 2026, from owning, purchasing, or receiving any firearm within 10 years of the conviction, and makes a violation of that prohibition a public offense punishable by imprisonment in a county jail, a fine, or by both the fine and imprisonment. Because this bill would expand the application of a crime to a larger class of potential offenders, this bill would impose a state-mandated local program. This bill would make these provisions severable. This bill would incorporate additional changes to Section 3273.50 of the Civil Code proposed by AB 1127 to be operative only if this bill and AB 1127 are enacted and this bill is enacted last. The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement. This bill would provide that no reimbursement is required by this act for a specified reason.

Who sponsors CA AB 1263?

Gipson is the primary sponsor of CA AB 1263, joined by 4 cosponsors.

Description

Existing law makes it a crime for a person to manufacture or cause to be manufactured specified firearms. Existing law prohibits a person, other than a state-licensed firearms manufacturer, from using a computer numerical control (CNC) milling machine or three-dimensional printer to manufacture a firearm. This bill would prohibit a person from knowingly or willfully causing another person to engage in the unlawful manufacture of firearms or knowingly or willfully aiding, abetting, prompting, or facilitating the unlawful manufacture of firearms, including the manufacture of assault weapons or .50 BMG rifles or the manufacture of any firearm using a three-dimensional printer or CNC milling machine, as specified. The bill would make a violation of these provisions a misdemeanor. By creating a new crime, this bill would create a state-mandated local program. Existing law authorizes a civil action against a person who knowingly distributes or causes to be distributed any digital firearm manufacturing code to any person, except as specified. For these purposes, existing law defines "digital firearm manufacturing code" to mean any digital instructions in the form of computer-aided design files or other code or instructions that may be used to program a CNC milling machine, a three-dimensional printer, or a similar machine to manufacture or produce a firearm, including a completed frame or receiver or a firearm precursor part. Existing law authorizes the Attorney General, county counsel, or city attorney to bring an action against this person and seek a civil penalty, as specified, for each violation, as well as injunctive relief. This bill would include computer-aided manufacturing files as a digital instruction and include the manufacture or production of a machinegun and specified firearm components, including large-capacity magazines, as part of the definition of digital firearm manufacturing code. The bill would also authorize a person who has suffered harm in California as a result of a violation of these provisions to seek compensatory damages and injunctive relief. The bill would create a rebuttable presumption that a person violated the provision of unlawfully distributing or causing to be distributed any digital firearm manufacturing code if the person owns or participates in the management of an internet website that makes digital firearm manufacturing code available for purchase, download, or other distribution to individuals, and the internet website, under the totality of the circumstances, encourages individuals to upload, disseminate, or use digital firearm manufacturing code to manufacture firearms, as specified. Existing law establishes a firearm industry standard of conduct, which requires a firearm industry member, as defined, to establish, implement, and enforce reasonable controls, as defined, and to take reasonable precautions to ensure that the member does not sell, distribute, or provide a firearm-related product, as defined, to a downstream distributor or retailer of firearm-related products who fails to establish, implement, and enforce reasonable controls. For these purposes, existing law defines firearm accessory and firearm manufacturing machine. This bill would require, prior to completing the sale or delivery in California or to a California resident of a firearm barrel that is unattached to a firearm, firearm accessory, or a firearm manufacturing machine, a firearm industry member to comply with specified requirements, including providing a prospective purchaser with clear and conspicuous notice that specified conduct is generally a crime in California, including manufacturing firearms to be sold or transferred to an individual without a license to manufacture firearms. Existing law, subject to exceptions, provides that any person who has been convicted of certain misdemeanors may not, within 10 years of the conviction, own, purchase, receive, possess, or have under their custody or control any firearm and makes a violation of that prohibition a crime. This bill would also prohibit any person convicted of specified misdemeanor violations, including manufacturing an undetectable firearm or knowingly or willfully causing another person to engage in the unlawful manufacture of firearms, on or after January 1, 2026, from owning, purchasing, or receiving any firearm within 10 years of the conviction, and makes a violation of that prohibition a public offense punishable by imprisonment in a county jail, a fine, or by both the fine and imprisonment. Because this bill would expand the application of a crime to a larger class of potential offenders, this bill would impose a state-mandated local program. This bill would make these provisions severable. This bill would incorporate additional changes to Section 3273.50 of the Civil Code proposed by AB 1127 to be operative only if this bill and AB 1127 are enacted and this bill is enacted last. The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement. This bill would provide that no reimbursement is required by this act for a specified reason.

Introduced
2025-02-21
Latest action
2025-10-11 — Chaptered by Secretary of State - Chapter 636, Statutes of 2025.
Bill type
bill
Last updated
—

Subjects

Sponsors

  • Gipsonauthor
  • Bauer-Kahancoauthor
  • Kalracoauthor
  • Schultzcoauthor
  • Stefanicoauthor

Committees

Not provided by source.

Action timeline

  1. 2025-02-21

    Introduced. To print.

    introduction

  2. 2025-02-22

    From printer. May be heard in committee March 24.

  3. 2025-02-24

    Read first time.

    reading-1

  4. 2025-03-24

    Referred to Coms. on PUB. S. and JUD.

    referral-committee

  5. 2025-03-24

    From committee chair, with author's amendments: Amend, and re-refer to Com. on PUB. S. Read second time and amended.

    amendment-introduction,amendment-passage,committee-passage,reading-1,reading-2,referral-committee

  6. 2025-03-25

    Re-referred to Com. on PUB. S.

    referral-committee

  7. 2025-04-09

    Coauthors revised.

  8. 2025-04-09

    From committee: Do pass and re-refer to Com. on JUD. (Ayes 7. Noes 0.) (April 8). Re-referred to Com. on JUD.

    committee-passage,committee-passage-favorable,referral-committee

  9. 2025-04-22

    From committee: Do pass and re-refer to Com. on APPR. (Ayes 10. Noes 1.) (April 22). Re-referred to Com. on APPR.

    committee-passage,committee-passage-favorable,referral-committee

  10. 2025-04-22

    Coauthors revised.

  11. 2025-04-30

    In committee: Set, first hearing. Referred to suspense file.

    referral-committee

  12. 2025-05-23

    From committee: Do pass. (Ayes 11. Noes 2.) (May 23).

    committee-passage,committee-passage-favorable

  13. 2025-05-27

    Read second time. Ordered to third reading.

    reading-1,reading-2,reading-3

  14. 2025-06-03

    Read third time. Passed. Ordered to the Senate. (Ayes 63. Noes 10. Page 2025.)

    passage,reading-1,reading-3

  15. 2025-06-04

    In Senate. Read first time. To Com. on RLS. for assignment.

    reading-1,referral-committee

  16. 2025-06-18

    Referred to Coms. on PUB. S. and JUD.

    referral-committee

  17. 2025-07-02

    From committee: Do pass and re-refer to Com. on JUD. (Ayes 5. Noes 1.) (July 1). Re-referred to Com. on JUD.

    committee-passage,committee-passage-favorable,referral-committee

  18. 2025-07-16

    From committee: Do pass and re-refer to Com. on APPR. (Ayes 11. Noes 1.) (July 15). Re-referred to Com. on APPR.

    committee-passage,committee-passage-favorable,referral-committee

  19. 2025-08-18

    In committee: Referred to suspense file.

    referral-committee

  20. 2025-08-29

    From committee: Do pass. (Ayes 5. Noes 2.) (August 29).

    committee-passage,committee-passage-favorable

  21. 2025-08-29

    Read second time. Ordered to third reading.

    reading-1,reading-2,reading-3

  22. 2025-09-05

    Read third time and amended. Ordered to second reading.

    amendment-passage,reading-1,reading-2,reading-3

  23. 2025-09-08

    Read second time. Ordered to third reading.

    reading-1,reading-2,reading-3

  24. 2025-09-11

    Read third time. Passed. Ordered to the Assembly. (Ayes 30. Noes 10. Page 2924.).

    passage,reading-1,reading-3

  25. 2025-09-12

    In Assembly. Concurrence in Senate amendments pending.

  26. 2025-09-12

    Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 62. Noes 13. Page 3387.).

    amendment-passage,committee-passage,committee-passage-favorable

  27. 2025-09-24

    Enrolled and presented to the Governor at 3 p.m.

    executive-receipt

  28. 2025-10-11

    Approved by the Governor.

    executive-signature

  29. 2025-10-11

    Chaptered by Secretary of State - Chapter 636, Statutes of 2025.

    became-law

Versions

  • 02/21/25 - Introduced — 2025-02-21Compare
  • 03/24/25 - Amended Assembly — 2025-03-24Compare
  • 09/05/25 - Amended Senate — 2025-09-05Compare
  • 09/16/25 - Enrolled — 2025-09-16Compare
  • 10/11/25 - Chaptered — 2025-10-11Compare
  • AB1263Compare
  • (document, no version)Compare

Documents

Votes

  • Do pass and be re-referred to the Committee on [Judiciary]

    2025-04-08 · pass · 7-0

    Member-level votes (9)
    • Mark González: yes
    • Sharp-Collins: yes
    • Schultz: yes
    • Harabedian: yes
    • Ramos: yes
    • Haney: yes
    • Alanis: yes
    • Lackey: other
    • Nguyen: other

  • Do pass and be re-referred to the Committee on [Appropriations]

    2025-04-22 · pass · 10-1

    Member-level votes (12)
    • Kalra: yes
    • Harabedian: yes
    • Bauer-Kahan: yes
    • Stefani: yes
    • Lee: yes
    • Dixon: yes
    • Zbur: yes
    • Connolly: yes
    • Pacheco: yes
    • Bryan: yes
    • Macedo: no
    • Sanchez: other

  • Do pass.

    2025-05-23 · pass · 11-2

    Member-level votes (15)
    • Calderon: yes
    • Elhawary: yes
    • Hart: yes
    • Mark González: yes
    • Arambula: yes
    • Pacheco: yes
    • Solache: yes
    • Caloza: yes
    • Wicks: yes
    • Pellerin: yes
    • Fong: yes
    • Dixon: no
    • Tangipa: no
    • Ta: other
    • Sanchez: other

  • AB 1263 Gipson Assembly Third Reading

    2025-06-04 · pass · 63-10

    Member-level votes (79)
    • Berman: yes
    • Jeff Gonzalez: yes
    • Zbur: yes
    • Celeste Rodriguez: yes
    • Bonta: yes
    • Blanca Rubio: yes
    • Fong: yes
    • Harabedian: yes
    • Rivas: yes
    • Elhawary: yes
    • Bauer-Kahan: yes
    • Valencia: yes
    • Wilson: yes
    • Wicks: yes
    • Bennett: yes
    • Haney: yes
    • Quirk-Silva: yes
    • Caloza: yes
    • Muratsuchi: yes
    • Soria: yes
    • Schiavo: yes
    • Ávila Farías: yes
    • Gabriel: yes
    • Mark González: yes
    • Nguyen: yes
    • Papan: yes
    • Ransom: yes
    • Bains: yes
    • Addis: yes
    • Kalra: yes
    • Lowenthal: yes
    • Solache: yes
    • Lee: yes
    • Alanis: yes
    • Ortega: yes
    • Calderon: yes
    • Patel: yes
    • Ward: yes
    • Michelle Rodriguez: yes
    • Irwin: yes
    • Krell: yes
    • Pellerin: yes
    • Sharp-Collins: yes
    • Ramos: yes
    • Bryan: yes
    • Boerner: yes
    • Davies: yes
    • Garcia: yes
    • Gipson: yes
    • McKinnor: yes
    • Stefani: yes
    • Connolly: yes
    • Alvarez: yes
    • Petrie-Norris: yes
    • Ahrens: yes
    • Jackson: yes
    • Schultz: yes
    • Aguiar-Curry: yes
    • Arambula: yes
    • Rogers: yes
    • Pacheco: yes
    • Hart: yes
    • Carrillo: yes
    • Sanchez: no
    • Tangipa: no
    • Ellis: no
    • Hadwick: no
    • Patterson: no
    • Gallagher: no
    • Castillo: no
    • DeMaio: no
    • Dixon: no
    • Macedo: no
    • Ta: other
    • Wallis: other
    • Lackey: other
    • Hoover: other
    • Flora: other
    • Chen: other

  • Do pass, but first be re-referred to the Committee on [Judiciary]

    2025-07-01 · pass · 5-1

    Member-level votes (6)
    • Wiener: yes
    • Gonzalez: yes
    • Caballero: yes
    • Arreguín: yes
    • Pérez: yes
    • Seyarto: no

  • Do pass, but first be re-referred to the Committee on [Appropriations]

    2025-07-15 · pass · 11-1

    Member-level votes (13)
    • Caballero: yes
    • Wahab: yes
    • Ashby: yes
    • Wiener: yes
    • Laird: yes
    • Umberg: yes
    • Weber Pierson: yes
    • Stern: yes
    • Allen: yes
    • Arreguín: yes
    • Durazo: yes
    • Niello: no
    • Valladares: other

  • Placed on suspense file

    2025-08-18 · pass · 7-0

    Member-level votes (7)
    • Richardson: yes
    • Seyarto: yes
    • Caballero: yes
    • Cabaldon: yes
    • Dahle: yes
    • Wahab: yes
    • Grayson: yes

  • Do pass

    2025-08-29 · pass · 5-2

    Member-level votes (7)
    • Richardson: yes
    • Grayson: yes
    • Wahab: yes
    • Caballero: yes
    • Cabaldon: yes
    • Dahle: no
    • Seyarto: no

  • 3rd Reading AB1263 Gipson et al. By Blakespear

    2025-09-11 · pass · 30-10

    Member-level votes (40)
    • Umberg: yes
    • McGuire: yes
    • Pérez: yes
    • Cabaldon: yes
    • Wiener: yes
    • Reyes: yes
    • McNerney: yes
    • Cervantes: yes
    • Caballero: yes
    • Menjivar: yes
    • Allen: yes
    • Archuleta: yes
    • Limón: yes
    • Durazo: yes
    • Richardson: yes
    • Hurtado: yes
    • Blakespear: yes
    • Gonzalez: yes
    • Ashby: yes
    • Padilla: yes
    • Laird: yes
    • Stern: yes
    • Grayson: yes
    • Rubio: yes
    • Cortese: yes
    • Smallwood-Cuevas: yes
    • Becker: yes
    • Weber Pierson: yes
    • Arreguín: yes
    • Wahab: yes
    • Valladares: no
    • Alvarado-Gil: no
    • Ochoa Bogh: no
    • Seyarto: no
    • Jones: no
    • Grove: no
    • Strickland: no
    • Niello: no
    • Dahle: no
    • Choi: no

  • AB 1263 Gipson Concurrence in Senate Amendments

    2025-09-12 · pass · 62-13

    Member-level votes (80)
    • Ahrens: yes
    • Mark González: yes
    • Quirk-Silva: yes
    • Gipson: yes
    • Rogers: yes
    • Addis: yes
    • Ward: yes
    • Haney: yes
    • Hart: yes
    • Fong: yes
    • Calderon: yes
    • Elhawary: yes
    • Wilson: yes
    • Carrillo: yes
    • Bains: yes
    • Ransom: yes
    • Soria: yes
    • Michelle Rodriguez: yes
    • Berman: yes
    • Valencia: yes
    • Wicks: yes
    • Celeste Rodriguez: yes
    • Arambula: yes
    • Connolly: yes
    • Schultz: yes
    • Bauer-Kahan: yes
    • Bennett: yes
    • Papan: yes
    • Schiavo: yes
    • Bonta: yes
    • Ávila Farías: yes
    • Aguiar-Curry: yes
    • Pacheco: yes
    • Boerner: yes
    • Alvarez: yes
    • Lee: yes
    • Alanis: yes
    • Stefani: yes
    • Caloza: yes
    • Sharp-Collins: yes
    • Nguyen: yes
    • Ortega: yes
    • Solache: yes
    • Lowenthal: yes
    • Blanca Rubio: yes
    • Jackson: yes
    • Bryan: yes
    • Petrie-Norris: yes
    • Harabedian: yes
    • Gabriel: yes
    • Zbur: yes
    • Davies: yes
    • McKinnor: yes
    • Pellerin: yes
    • Muratsuchi: yes
    • Krell: yes
    • Irwin: yes
    • Ramos: yes
    • Patel: yes
    • Kalra: yes
    • Rivas: yes
    • Garcia: yes
    • Johnson: no
    • Dixon: no
    • Hadwick: no
    • Tangipa: no
    • Macedo: no
    • Gallagher: no
    • Jeff Gonzalez: no
    • Sanchez: no
    • Chen: no
    • Castillo: no
    • Ellis: no
    • Patterson: no
    • DeMaio: no
    • Flora: other
    • Hoover: other
    • Lackey: other
    • Wallis: other
    • Ta: other

Related bills

No related bills recorded for this bill.

Official source

http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260AB1263

Attribution

Data from openstates_bulk_csv, retrieved 2026-07-24T01:34:27.960412Z

Inspect retained evidence for changes recorded after evidence tracking began:

Source and document changesStatus and relationship changes

Use this data

Every field on this page is available from the free public API — no key or licence required. Fetch this bill as JSON: GET /api/v1/bills?jurisdiction=CA&identifier=AB 1263. See the API docs or the MCP server for AI assistants.

Known limitations

  • Sponsor party and chamber affiliation are not yet captured by this API.
  • Committee referrals are not yet captured.
  • Some documents have no extracted text yet, so version comparison may be limited.

See the methodology page for data sources and limitations.