If you live in California you will need our AK California compliant magazine lock. The CA compliant Mag Lock allows the user to drop a a magazine with the use of a tool or tip of a bullet. It prevents finger manipulation of the mag release, and creates a condition allowed under current individual interpretations of California law for California Sales & for personal use. This Mag Lock can not be used with magazines greater than 10 rounds in capacity in the state of CA. To do so in the state of California on an unregistered assault weapon, would be a felony. The CA Legal Mag Lock installs in less than a minute. The installation is not permanent, and can be reversed just as quickly. No gunsmithing required.