Guns and Untraceable Firearms Act of 2023, it shall be unlawful for any person other than a licensed manufacturer to possess, in or affecting interstate or foreign commerce, a machine that has the sole or primary function of manufacturing firearms. (D) Subparagraphs (B) and (C) shall not apply to a person who is engaged in the business of selling manufacturing equipment to a licensed manufacturer who possesses a machine that has the sole or primary function of manufacturing firearms with the intent to sell or transfer the machine to a licensed manufacturer. . (c) Requirements (1) Removal of serial numbers Section 922(k) of title 18, United States Code, is amended— (A) by striking importer’s or manufacturer’s each place it appears