Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 140, § 131 3/4

(a) The secretary of public safety and security shall, with the advice of the firearm control advisory board established in section 1311/2 compile and publish a roster of assault-style firearms banned under section 131M and a roster of firearms approved for sale and use in the commonwealth using the parameters set forth in section 123. The secretary shall, not less than 3 times annually, review, update, and publish the rosters online, and send a copy to all persons licensed in the commonwealth pursuant to section 122. Licensing authorities shall provide information on these rosters to all permit and card holders and licensees upon initial issuance and every renewal.

(b) The secretary, with the advice of the firearm control advisory board, shall also compile and publish a roster of firearms solely designed and sold for formal target shooting competitions or Olympic shooting competitions. The board shall, not less than biannually, review, update and publish these rosters and make them available for distribution.

(c) The secretary may amend any roster upon their own initiative. A person may petition the secretary to place a firearm on, or remove a firearm from, the roster, subject to the provisions of this section. A petition to amend a roster shall be submitted in writing to the secretary, in the form and manner prescribed by the secretary, and include reasons why the roster should be amended. Upon receipt of a petition to amend a roster, the secretary shall, within 45 days, either notify the petitioner that the petition is denied or modify the roster. An addition to the roster shall be effective on the date it is published online by the board.