Weapons: firearms; requirement for all firearm components to contain serial numbers; provide for. Amends 1927 PA 372 (MCL 28.421 - 28.435) by adding sec. 14c.

This bill requires all firearms sold, transferred, or manufactured in Michigan to have a valid serial number, with a three-year grace period before possession becomes prohibited. It mandates that anyone making more than five guns a year for personal use, or anyone using 3D printers or milling machines to create firearms, must obtain a manufacturing license. Unlicensed individuals who build their own guns must register them with the state within 10 days, while law enforcement, military personnel, and licensed gunsmiths are exempt from these rules. Violating these requirements by selling, transferring, or possessing unserialized weapons or ghost gun precursors is a criminal offense.