Dillon Aero Inc., Scottsdale, Arizona, is awarded an $8,000,000 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for sustainment parts for currently fielded U.S. Special Operations Command MK44 MOD 3 gun weapon systems. Work will be performed in Scottsdale, Arizona, and is expected to be completed by March 2026. Fiscal 2021 defense operations and maintenance funding in the amount of $10,100 will be obligated at the time of award and will expire at the end of the current fiscal year. This contract was not competitively procured in accordance with 10 U.S. Code 2304(c)(1) — only one responsible source and no other supplies or services will satisfy agency requirements. The Naval Surface Warfare Center, Crane Division, Crane, Indiana, is the contracting activity (N0016421DJN83).