MA Compliant guns are firearms that meet Massachusetts state law requirements, including the criteria set by the Attorney General's regulations and appearance on the state's Approved Firearms Roster. Required features include manual safeties, tamper-resistant serial numbers, and load indicators. Handguns must pass drop-safety and trigger-pull tests. Magazine capacity is restricted to 10 rounds or fewer, and rifles may need featureless configurations to comply with assault weapon restrictions. Manufacturers including Glock, Smith & Wesson, and Ruger produce Massachusetts-compliant models.