MS HB434

Creates a crime for possessing, selling, or transferring unserialized firearms and unfinished frames/receivers (commonly called "ghost guns"), including those made with 3D printers

Beginning January 1, 2027, possession of unserialized firearms or unfinished frames/receivers becomes unlawful unless the item has been properly serialized by a licensed dealer or manufacturer

First offense for selling/transferring unserialized firearms is a felony punishable by up to $25,000 fine and 1-3 years imprisonment; first offense for possession is a misdemeanor with up to $2,500 fine and 1 year in jail

Requires the Commissioner of Public Safety to publish notice of the new requirements and exempts antique firearms, items manufactured before October 22, 1968, and permanently inoperable firearms

3D-printed firearms must be serialized before August 1, 2026, or before reaching a stage where they can readily function as a firearm