The bill introduces a new chapter to Title 11 of the General Laws, focusing on "Assault Weapons." It defines key terms and imposes restrictions on the manufacture, sale, purchase, possession, and transfer of assault weapons, with penalties including imprisonment and fines for non-compliance. However, there are exemptions for individuals who legally owned an assault weapon before the chapter's effective date, allowing them to register the weapon, render it inoperable, surrender it, or transfer/sell it to authorized entities. Law enforcement officers and certain other individuals are also exempt from these restrictions. The bill details the process for handling assault weapons if the owner passes away, including a 180-day period for heirs or the estate to take appropriate action.

The bill requires the registration of assault weapons within a year, including a background check and a $25 fee per person for any number of weapons. Registration procedures vary by location, and a certificate of possession is issued upon completion. The bill specifies conditions for possessing assault weapons, such as at home, business, or with permission on another's property, and at shooting ranges or clubs. It also describes how to legally transport assault weapons and the penalties for violations. The sale or transfer of grandfathered assault weapons to federally licensed firearm dealers is regulated, including the execution of a certificate of transfer. The bill contains a severability clause and takes effect upon passage, with violations potentially leading to fines up to $10,000 or imprisonment up to ten years.