is shipping 15 rd mag to CA legal?

As the title states, I’m wondering if it is legal to ship a 15 round glock magazine to California. I have searched and some people say not to at all and some say just to disassemble it first. I am looking for a definitive answer. Any help is appreciated.

No. Not even disassembled

If the person is law enforcement or you’re shipping it to an FFL with a high cap mag permit, then it’s legal