The Department of Defense, through the Naval Air Systems Command (NAVAIR), intends to negotiate a sole source contract with Northrop Grumman Defense Systems (NGDS) for the redesign of Surface Acoustic Wave (SAW) Filter devices used in the WIA Transmitter of the AARGM-ER missile system. This procurement aims to reengineer, test, integrate, and manufacture replacement SAW Filter devices due to the obsolescence of the existing components, ensuring continued operational capability of the missile system. As the sole designer and manufacturer of the AARGM and AARGM-ER, NGDS possesses the unique technical expertise and resources necessary to fulfill these requirements. Interested parties may express their interest and capabilities to the primary contact, Hayley M. Graham, via email at hayley.m.graham.civ@us.navy.mil, although this notice does not constitute a request for competitive proposals.