The purpose of this legislation is to enhance penalties for mass killings that involve machine guns or specific types of semiautomatic weapons. It aims to address the growing concern over gun violence, particularly in public spaces, and to provide a stronger legal framework for prosecuting such crimes. Key provisions of the law include the establishment of a new offense for mass killings involving these weapons. If someone kills three or more people in a single event using a machine gun or a covered semiautomatic weapon, they can face severe penalties, including life imprisonment.