This bill seeks to strengthen firearm regulations by amending title 18, United States Code, primarily by expanding the categories of individuals prohibited from certain firearm-related activities. A key provision prohibits individuals from shipping, transporting, possessing, or receiving firearms and ammunition if they fail to meet both the federal age requirement and the age requirement in their State of residence. It also extends this prohibition to persons who do not reside in the State where the firearm licensee's place of business is located, subject to specific exceptions. The legislation further modifies existing penalty provisions under section 924(a)(2) of title 18. This amendment incorporates a new subsection into the list of offenses subject to these penalties. The bill's stated purpose indicates this change is designed to increase penalties for the transfer of a firearm to any person who is under indictment .