provisions relating to the industrial base (a) Miscellaneous limitations on the procurement of goods other than United States goods Section 2534 of title 10, United States Code, is amended by adding at the end the following new subsection: (k) Sunset on certain restrictions The restriction under subsection (a) relative to the procurement of the items set forth in paragraphs (1) through (4) of such subsection shall terminate on the close of September 30, 2018. . (b) Photovoltaic devices Section 858 of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( Public Law 113–291