Northrop Grumman Systems Corp. (NGSC), Chandler, Arizona, is being issued a $153,000,000 not-to-exceed undefinitized contract action to previously awarded contract HQ0147-19-C-0005 to support the development and production of five subscale MBRV-11 vehicles (Modified Ballistic Re-Entry Vehicle-11). The value of this contract is increased from $353,788,276 to $506,788,276. Under this modification, the contractor will procure, manufacture, and assemble hardware and perform required testing. NGSC will also support launch vehicle integration, launch execution, and pre- and post-flight activities. The work will be performed in Chandler, Arizona; and Redstone Arsenal, Alabama. The performance period is from March 2023 through September 2027. Fiscal 2023 research, development, test and evaluations funds will be used on this effort; the initial funding amount is $6,057,000. A request for information was posted on SAM.gov and three responses were received. The three responses were evaluated during market research and only one source was identified as able to fulfill the agency’s requirement. The Missile Defense Agency, Redstone Arsenal, Alabama, is the contracting activity.