Gun owners and aficionados should be aware and concerned with Proposition 63. Proposition 63 demands background checks for ammunition purchases but more importantly, among other things, seeks to ban the ownership of large capacity magazines regardless of when they were obtained or purchased. California has banned the sale of large capacity magazines since 2000, however, any individuals who obtained magazines before 2000 were allowed to keep them. If passed, Proposition 63 would remove the ownership exemption for pre-2000 owners of large-capacity magazines. Individuals who do not comply with the measure would be charged with an infraction.