Section 26845 Of Article 2. Grounds For Forfeiture Of License From California Penal Code >> Division 6. >> Title 4. >> Part 6. >> Chapter 2. >> Article 2.

. (a) No handgun may be delivered unless the purchaser, transferee, or person being loaned the firearm presents documentation indicating that the person is a California resident.
  (b) Satisfactory documentation shall include a utility bill from within the last three months, a residential lease, a property deed, or military permanent duty station orders indicating assignment within this state, or other evidence of residency as permitted by the Department of Justice.
  (c) The firearms dealer shall retain a photocopy of the documentation as proof of compliance with this requirement.