No, gun magazines are not illegal in California. There are a few restrictions on gun magazines in California, but nothing that would make them outright illegal. The main restriction is that gun magazines may not be able to hold more than 10 rounds of ammunition. This is to help prevent mass shootings and other gun violence. There are also restrictions on who can buy gun magazines and where they can be sold, but these regulations vary from state to state.
Stephen Answered question September 1, 2022