Cal. Penal Code - PEN § 29010. Section 29010.
(a)
A person shall not manufacture more than three firearms within this state in a calendar year unless that person is licensed pursuant to Chapter 2 (commencing with Section 29030).
(b)
If a person required to be licensed pursuant to Chapter 2 (commencing with Section 29030) ceases operations, then the records required pursuant to Section 29130 and subdivision (b) of Section 29115 shall be forwarded to the federal Bureau of Alcohol, Tobacco, Firearms and Explosives within three days of the closure of business.
(c)
A violation of this section is a misdemeanor.