Yes, CA residents can purchase fire larks online, and have them shipped to an ffl. But for handguns the EXACT model has to be listed on the CA DOJ approved handgun roster.
The Berreta M9 does have a CA approved model but it is currently out of stock at buds, ots this one here
budsgunshop.com/product_info.php/products_id/106571 />You can hit the notify me when available button to receive an email when they come back in stock.
Or it is available for backorder here
https://anthonysfirearmwarehouse.com/store/GJS92M9A1CA-22351-082442884950/
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Couple more similar CA legal Berretas here (also out of stock. But ones to keep an eye out for)
budsgunshop.com/search.php/type/Handguns/exclusive/ca/manu/86

Yes

Roger, yes but it is currently out of stock at Buds but the CA compliant Beretta M9 can be found here : https://gun.deals/search/apachesolr_search/082442816838

If there is a Ca in the serial number