The Department of Defense, through the Naval Air Systems Command (NAVAIR), is seeking to increase the quantity of GAU-21 .50 caliber machine guns and ancillary support equipment under a sole source IDIQ contract with FN Herstal, S.A., located in Herstal, Belgium. This procurement is critical as FN Herstal is the sole designer and manufacturer of the GAU-21, possessing the unique technical knowledge and tooling necessary to fulfill the government's requirements. Interested parties should note that there are no commitments from the government to issue solicitations or awards at this time, and all inquiries should be directed to Ms. Brittoney Green via email at brittoney.k.green.civ@us.navy.mil. The opportunity is categorized under NAICS code 332994, and the place of performance is in Belgium.