; (5) the law enforcement agency will have in place a process to test on site a gun purchased from an individual through such program before payment is provided to such individual; and (6) an adequate process will be in place to destroy all guns received through such program. (e) Matching requirement (1) In general Subject to paragraph (2), to be eligible for a grant under this section, a law enforcement agency must certify that the law enforcement agency will match all Federal funds provided under such grant with an equal amount of cash or in-kind goods or services from other non-Federal sources. (2) Waiver The Assistant Attorney General for the Office of Justice Programs may waive, wholly or in part, the matching requirement under paragraph (1) with respect to a grant made under this section to a law enforcement agency for a gun buyback program if such program provides for obtaining only the guns identified by the National Academy of Sciences pursuant to subsection (f). (f) National Academy of Sciences Standards The Attorney General, through the Assistant Attorney General for the Office of Justice Programs, shall enter into an arrangement with the National Academy of Sciences to develop standards for identifying, and identify, guns that are the most likely to be used in violent crimes and establish a pricing scale for purchasing guns so identified through gun buyback programs receiving grants under this section. (g) Reports (1) Reports required by grantees In the case of a law enforcement agency described in subsection (a) receiving a grant under this section with respect to a gun buyback program, such agency shall submit to the Assistant Attorney General for the Office of Justice Programs— (A) not later than 90 days after receipt of such grant and every 90 days thereafter during the period for which the program is carried out, a report including— (i) the number and types of guns collected and destroyed through such program during such period