I think it's typical to have 1 in the rifle, plus 3 or 4 reloads, so for you, that would be 12 or 15. But I think California's 10 round limit was axed... Yup, as of this month, you can now get 30 round mags! https://abc7.com/ammunition-magazines-california-ban/6370763/
"Today’s opinion, however, should not be read as immediately ending the ban on acquiring magazines over 10 rounds. While possession of these magazines remains legal under the injunction issued by the district court in 2017, it is unclear whether today’s decision lifts the district court’s 2019 order staying the injunction that would have halted the enforcement of the manufacture and acquisition ban. According to the terms of that order, it remains in effect “pending final resolution” of the Duncan appeal. And because the state of California may petition for an 11-judge en banc panel to rehear the case or file a petition directly to the Supreme Court of the United States, it may be months before this appeal is finally resolved. Put simply, take caution! It is unclear whether California residents may begin to purchase magazines over 10 rounds yet."
NICE!
Edit: I Hope the friend doesn't get into any trouble, and maybe next time give him another magazine just in case.
How many mags do I need in CA? (10 round limit)
I think it's typical to have 1 in the rifle, plus 3 or 4 reloads, so for you, that would be 12 or 15. But I think California's 10 round limit was axed... Yup, as of this month, you can now get 30 round mags! https://abc7.com/ammunition-magazines-california-ban/6370763/
Still can't get them yet.
From CRPA:
"Today’s opinion, however, should not be read as immediately ending the ban on acquiring magazines over 10 rounds. While possession of these magazines remains legal under the injunction issued by the district court in 2017, it is unclear whether today’s decision lifts the district court’s 2019 order staying the injunction that would have halted the enforcement of the manufacture and acquisition ban. According to the terms of that order, it remains in effect “pending final resolution” of the Duncan appeal. And because the state of California may petition for an 11-judge en banc panel to rehear the case or file a petition directly to the Supreme Court of the United States, it may be months before this appeal is finally resolved. Put simply, take caution! It is unclear whether California residents may begin to purchase magazines over 10 rounds yet."