Cal. Code Regs. tit. 11, § 5478
(a) The Department will accept voluntary deregistration requests for assault weapons that are no longer possessed by the registrant, in the form of a completed Form BOF 4546, “Notice of No Longer in Possession,” (Rev. 12/2019) hereby incorporated by reference. Deregistration requests will also be accepted for assault weapons, as defined in Penal Code section 30515, that have been modified or reconfigured to no longer meet that definition. Deregistration requests must be in writing, signed, dated, and provide the following information:
Note: Authority cited: Section 30900, Penal Code. Reference: Sections 30515 and 30900, Penal Code.
1. New section filed 7-31-2017; operative 7-31-2017. Submitted to OAL for filing and printing only pursuant to Penal Code section 30900(b)(5) (Register 2017, No. 31).
2. Amendment of subsection (b) filed 6-27-2019 as an emergency; operative 7-1-2019 (Register 2019, No. 26). A Certificate of Compliance must be transmitted to OAL by 12-30-2019 or emergency language will be repealed by operation of law on the following day.
3. Change without regulatory effect amending subsections (a) and (b) filed 12-17-2019 pursuant to section 100, title 1, California Code of Regulations (Register 2019, No. 51).
4. Amendment of subsection (b) refiled 12-19-2019 as an emergency; operative 12-31-2019 (Register 2019, No. 51). A Certificate of Compliance must be transmitted to OAL by 3-30-2020 or emergency language will be repealed by operation of law on the following day.
5. Editorial correction implementing 12-17-2019 nonsubstantive amendments (Register 2020, No. 13).
6. Amendment of subsection (b) refiled 3-25-2020 as an emergency; operative 3-31-2020 (Register 2020, No. 13). A Certificate of Compliance must be transmitted to OAL by 6-29-2020 or emergency language will be repealed by operation of law on the following day.
7. Certificate of Compliance as to 3-25-2020 order, including amendment of subsection (b), transmitted to OAL 3-18-2020 and filed 4-27-2020; amendments operative 4-27-2020 pursuant to Government Code section 11343.4(b)(3) (Register 2020, No. 18).