the installation is located: Provided further, That such local procurement requirements for malt beverages and wine shall apply to all alcoholic beverages only for military installations in States which are not contiguous with another State: Provided further, That alcoholic beverages other than wine and malt beverages, in contiguous States and the District of Columbia shall be procured from the most competitive source, price and other factors considered. 8018. None of the funds available to the Department of Defense may be used to demilitarize or dispose of M–1 Carbines, M–1 Garand rifles, M–14 rifles, .22 caliber rifles, .30 caliber rifles, or M–1911 pistols, or to demilitarize or destroy small arms ammunition or ammunition components that are not otherwise prohibited from commercial sale under Federal law, unless the small arms ammunition or ammunition components are certified by the Secretary of the Army or designee as unserviceable or unsafe for further use. 8019. No more than $500,000 of the funds appropriated or made available in this Act shall be used during a single fiscal year for any single relocation of an organization, unit, activity or function of the Department of Defense into or within the National Capital Region: Provided, That the Secretary of Defense may waive this restriction on a case-by-case basis by certifying in writing to the congressional defense committees that such a relocation is required in the best interest of the Government. 8020. Of the funds made available in this Act under the heading Procurement, Defense-Wide , $25,169,000 shall be available only for incentive payments authorized by section 504 of the Indian Financing Act of 1974 ( 25 U.S.C. 1544 ): Provided, That a prime contractor or a subcontractor at any tier that makes a subcontract award to any subcontractor or supplier as defined in section 1544 of title 25, United States Code, or a small business owned and controlled by an individual or individuals defined under section 4221(9) of title 25, United States Code, shall be