Section 27530 Of Article 1. Crimes Relating To Sale, Lease, Or Transfer Of Firearms From California Penal Code >> Division 6. >> Title 4. >> Part 6. >> Chapter 4. >> Article 1.

. No person shall sell or otherwise transfer ownership in a handgun unless the firearm bears either:
  (a) The name of the manufacturer, the manufacturer's make or model, and a manufacturer's serial number assigned to that firearm.
  (b) The identification number or mark assigned to the firearm by the Department of Justice pursuant to Section 23910.