shall not constitute the transfer of a firearm for purposes of this chapter. . 4. Prohibition on transfer to certain unlicensed persons Section 922 of title 18, United States Code, as amended by section 3 of this Act, is amended by adding at the end the following: (bb) Prohibition on transfer to certain unlicensed persons It shall be unlawful for any person to— (1) sell or otherwise dispose of a firearm to any person if such person does not have a license issued under section 932 or a substantially similar State law, as determined by the Attorney General, during the previous 30 days