; and (B) each function results in at least one fired cartridge. . (c) Penalties Section 924(a)(2) of such title is amended by striking or (o) and inserting (o), or (aa). 4. Sentencing guidelines Pursuant to its authority under section 924 of title 28, United States Code, and in accordance with this section, the United States Sentencing Commission shall amend and review the Federal sentencing guidelines and policy statements to ensure that the guidelines provide for a penalty enhancement of not less than 2 offense levels for a violation of section 922(aa) of title 18 of such Code, and for a violation of section 922(o) of such title 18 consisting of possession of a bump-stock-type device (as defined in section 921(a)(30) of such title 18) if the device that is the subject of the violation has been— (1) used, carried, or possessed during or in relation to a crime of violence or drug trafficking crime (as such terms are defined in section 924(c)(3) of such title 18); or (2) smuggled unlawfully into or from the United States.