Registering a firearm isn’t required if the following is correct:
http://oag.ca.gov/firearms/pubfaqs
State of California Department of Justice
Office of Attorney General
26. How do I know if my firearms need to be registered?
There is no firearm registration requirement in California except for assault weapon owners and personal handgun importers. However, you may submit a Firearm Ownership Record to the DOJ for any firearm you own. Having a Firearm Ownership Record on file with the DOJ may help in the return of your firearm if it is lost or stolen. With very few and specific exceptions, all firearm transactions must be conducted through a firearms dealer.
More gun laws wouldn't have saved the kid, obviously. Besides, if guns are not available, there are numerous other methods just as irrevocably deadly.
And right below that is this:
27. Can I get a list of the firearms for which I am listed as the purchaser, transferee, or owner?
Yes. To obtain a list of firearms listed in your name, complete and submit an Automated Firearms System Records Request, pdf form to the Automated Firearms Unit, P.O. Box 820200, Sacramento, CA 94203-0200. The letter must be signed, notarized, and include a photocopy of your photo ID card (ie., driver’s license or DMV ID).
My shotguns aren’t registered.
Yeo, boating accident.