Relating to large-capacity ammunition magazines; declaring an emergency.

Prohibits possession of large-capacity magazine 180 days after effective date of Act. Specifies manner in which person must alter or dispose of large-capacity magazine currently possessed by person. Prohibits use of large-capacity magazine upon effective date of Act. Exempts law enforcement and military personnel from prohibition in specified circumstances. Punishes unlawful possession of large-capacity magazine by maximum of $2,000 fine, or by maximum of six months' imprisonment, $2,500 fine, or both, for second and subsequent convictions. Punishes unlawful use of large-capacity magazine by maximum of 364 days' imprisonment, $6,250 fine, or both. Prohibits manufacture, purchase, transfer and sale of large-capacity magazine upon effective date of Act. Specifies exemptions. Punishes unlawful manufacture, purchase, transfer or sale of large-capacity magazine by maximum of 364 days' imprisonment, $6,250 fine, or both. Requires report of loss or theft of unaltered large-capacity magazine. Provides immunity from prosecution for possession or transfer of magazine if report made as required. Declares emergency, effective on passage.