; and (B) may not obliterate or otherwise alter the serial number on such large capacity ammunition feeding device. . 3. Use of Byrne grants for buy-back programs for gas-operated semi-automatic firearms and large capacity ammunition feeding devices Section 501(a)(1) of title I of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10152(a)(1) ) is amended by adding at the end the following: (J) Compensation for surrendered gas-operated semi-automatic firearms and large capacity ammunition feeding devices, as defined in section 921 of title 18, United States Code, under buy-back programs for gas-operated semi-automatic firearms and large capacity ammunition feeding devices. . 4. Penalties Section 924(a) of title 18, United States Code, is amended by adding at the end the following: (9) (A) Whoever violates subsection (v) or (w) of section 922 shall be fined not more than $5,000, imprisoned not more than 12 months, or both, for each offense. (B) Whoever, while in possession of a gas-operated semi-automatic firearm in violation of section 922(v), commits, or attempts to commit, any other Federal offense punishable by imprisonment for a term exceeding 1 year, shall, in addition to the punishment provided for such offense, be fined not more than $250,000, imprisoned for a term not less than 2 years and not more than 10 years, or both. . 5. Prohibited firearm determinations (a) Amendment Chapter 44 of title 18, United States Code, is amended by adding at the end the following: 935. Prohibited firearm determinations (a) Determination of prohibited firearms For purposes of carrying out section 922(v), not later than 180 days after the date of enactment of this section, the Attorney General, acting through the Director of the Bureau of Alcohol, Tobacco, Firearms, and Explosives, shall publish, and update, a list of gas-operated semi-automatic firearms in or affecting interstate or foreign commerce that are subject to the prohibition in section 922(v). (b) Responsibilities In carrying out this section, the