A firearm is still an item of "property" as used in the statutes.The OP is specific to "found firearms".
Please show an example of a found firearm being turned over to the finder in CA!
As I recall in the western states I'm familiar with, firearms are the exception to the rule of finders claiming found property.
See post #21, change "found property" to "found firearm".
There is no informational reporting service that collects data on property returned under Civil Code 2080.3. I did not personally encounter any request for the return of a firearm during my time in LE service. But I know well from that service, that compliance with the statutes is required.
California law makes no special provision for found firearms. Civil Code section 2080.2 applies to found firearms, just as it does to any other item of property.