; (C) in subsection (b)(4)(A), by striking storage for explosive materials and inserting storage for explosive materials or a binary explosive ; and (D) in subsection (f), by adding at the end: A reference in this subsection to explosive materials shall also include a binary explosive. . (2) Treatment with respect to penalties Section 844 of title 18, United States Code, is amended by adding at the end the following: (q) Treatment of binary explosives A reference in this section to explosive materials shall also include a binary explosive. . (c) Effective date The amendments made by this section shall take effect on the date that is 1 year after the date of enactment of this Act. 2. Establishment of maximum purchase amounts for binary explosives Section 842 of title 18, United States Code, is amended by adding at the end the following: (q) Establishment of maximum purchase amounts for binary explosives (1) Maximum monthly purchase amounts Not later than 90 days after the date of enactment of this subsection, the Attorney General shall establish the maximum amount of a binary explosive (or a combination thereof) that may be purchased by one individual in a calendar month, based on a recommendation from the Director of the Bureau of Alcohol, Tobacco, Firearms and Explosives. (2) Establishment of national binary explosive check system (A) In general Not later than 180 days after the date of enactment of this subsection, the Attorney General shall establish a national binary explosive check system. (B) Operation of system The system shall— (i) be electronic and accessible through an Internet website; (ii) compile records of sales of all binary explosives to named individuals; (iii) be capable of identifying a named individual by entry of information from a valid identification document (as defined in section 1028(d)) issued to such individual