WORCESTER — A local man pleaded guilty in federal court Thursday to illegally dealing firearms and possessing a machinegun,
Anthony “AJ” Pietrowski, 24, of Webster, pleaded guilty to one count of dealing firearms without a license and one count of possessing a machinegun, according to the U.S. Attorney’s Office for the District of Massachusetts.
Prosecutors said Pietrowski sold privately made firearms and firearm parts during four transactions in Webster between August and October 2025, including a 3D-printed Glock-style pistol, several 3D-printed pistol frames and a device designed to convert a Glock-style pistol into a machinegun. He had not applied for or received a federal license to manufacture or sell firearms…