; or (ii) in furtherance of agreements with foreign governments in which both such governments agree to remove barriers to purchases of supplies produced in the other country or services performed by sources of the other country; and (B) any such agreement with a foreign government complies, where applicable, with the requirements of section 36 of the Arms Export Control Act ( 22 U.S.C. 2776 ) and with section 2457 of title 10. (5) Exception for small purchases Paragraph (1) does not apply to acquisitions in amounts not greater than the simplified acquisition threshold referred to in section 134 of this title. (6) Exception for purchases of electronic components Paragraph (1) does not apply to acquisitions of electronic components, unless the head of the agency, with the concurrence of the Secretary of Defense and upon the recommendation of the Strategic Materials Protection Board pursuant to section 187 of title 10, determines that the domestic availability of a particular electronic component is critical to national security. (7) Applicability to acquisitions of commercial items (A) In general Except as provided in subparagraphs (B) and (C), this section applies to acquisitions of commercial items, notwithstanding sections 1906 and 1907 of this title. (B) Exceptions This section does not apply to contracts or subcontracts for the acquisition of commercially available off-the-shelf items, as defined in section 104 of this title, other than— (i) contracts or subcontracts for the acquisition of specialty metals, including mill products, such as bar, billet, slab, wire, plate and sheet, that have not been incorporated into end items, subsystems, assemblies, or components; (ii) contracts or subcontracts for the acquisition of forgings or castings of specialty metals, unless such forgings or castings are incorporated into commercially available off-the-shelf end items, subsystems, or assemblies