[Inyo-Mono]

Any semi-auto shotgun is legal in California, except those with a pistol grip.

[raptor29]

Thanks Inyo-Mono, appreciate the information.

[absalom01]

The state’s regulations are published on-line, here:

http://ag.ca.gov/firearms/regs/

For the past few years, the law has been tinkered with on an annual basis. Always good to check the current regs before purchasing. Comply or not, it’s best to know for sure before you accidentally commit a felony...

[Tree of Liberty]

Incorrect. From the law, itself, here are the banned shotgun features:

(6) A semiautomatic shotgun that has both of the following:

(A) A folding or telescoping stock.
(B) A pistol grip that protrudes conspicuously beneath the action of the weapon, thumbhole stock, or vertical handgrip.

(7) A semiautomatic shotgun that has the ability to accept a detachable magazine.
(8) Any shotgun with a revolving cylinder.