Buds unfortunately doesn't ship any non compliant magazines, or guns to ffls in California for compliance work.
If the gun is otherwise permitted in California they will ship it without the magazines. Just add the item to your cart go through check out and use the high capacity magazine removal service.
But you will have to buy compliant magazines, the high capacity magazines can't be sold if buds was to remove them as they would have no packaging and so would be losing money as they'd likely have to sell them as used.