The only difference between a CZ sold in Arizona and one that is on the California approved roster but will be sold in California with 10 round magazines supplied will be the bar code and product number on the factory packaging. The guns bear no identification themselves regarding where they can be sold.
While there has been a lot of back and forth in the courts regarding legality of high capacity magazines in California, until there is a definitive definitive iron clad ruling, here is the current Penal Code:
PC 32310.
(a) Except as provided in Article 2 (commencing with Section 32400) of this chapter and in
Chapter 1 (commencing with Section 17700) of Division 2 of Title 2, any person in this state who
manufactures or causes to be manufactured, imports into the state, keeps for sale, or offers or
exposes for sale, or who gives, lends, buys, or receives any large-capacity magazine is punishable
by imprisonment in a county jail not exceeding one year or imprisonment pursuant to subdivision
(h) of Section 1170.
Enforcement of the law regarding "possession" of high capacity magazines that are grandfathered in as being owned prior to the ban, or purchased during the so called Freedom Week is not being done at the moment. Unless you do something stupid and you are being brought up on other charges and some D.A. wants to add more charges to your prosecution.
So get a couple of 10 round legal magazines and bring those with you to California. Don't risk bringing any non-compliant magazines into the state. And hope that this gets settled once and for all soon.