; and (B) by adding at the end the following: (8) Whoever makes or attempts to transfer ammunition in violation of section 922(t) to a person not licensed under this chapter who is prohibited from receiving ammunition by subsection (g) or (n) of section 922 or State law, to a law enforcement officer, or to a person acting at the direction of, or with the approval of, a law enforcement officer authorized to investigate or prosecute a violation of section 922(t), shall be fined under this title, imprisoned not more than 5 years, or both. ; and (2) by adding at the end the following: (q) Improper use of storage of records Any person who knowingly violates section 923(m) shall be fined under this title, imprisoned not more than 15 years, or both. . 5. Rules of construction (a) Nothing in this Act or an amendment made by this Act (except the amendments made by section 3(a)(2)) shall be construed to extend background check requirements to transfers other than those made at gun shows or on the curtilage thereof, or pursuant to an advertisement, posting, display, or other listing on the Internet or in a publication by the transferor of the intent of the transferor to transfer, or the transferee of the intent of the transferee to acquire, the ammunition. (b) Nothing in this Act or an amendment made by this Act shall be construed to extend background check requirements to transfers of ammunition for purposes of lawful hunting or sporting by a transferee in the presence of, or on the premises of, the transferor, or to possession of ammunition for purposes of examination or evaluation by a prospective transferee in the presence of, or on the premises of, the transferor. 6. Effective date This title and the amendments made by this title shall take effect 180 days after the date of enactment of this Act.