Ronald, this is CA compliant. Permitted: Shotguns with multiple tubular magazines, each having a 10-round or fewer capacity, and that must be manually switched from one tube to the other tube to use each group of ammunition are permitted. budsgunshop.com/feeds/state_reg/california_restrictions.pdf .....Have a great day!

Ronald, yes Sir since the 2 magazines are treated as individual magazine since you have to manually switch between the two. Cheers and stay safe in Cali!

Yes, it actually is California compliant/legal. CA restricted features on shotguns are:
1. Being semi-auto and not having a fixed magazine.
2. Being semi-auto and having a folding/telescoping stock and a pistol grip or vertical handgrip.
3. Having a rotating cylinder.
4. Having a barrel length of less than 18".
5. Having an overall length of less than 26. So you're good to go. Hope this helps.