The Naval Sea Systems Command, Naval Surface Warfare Center, Philadelphia Division (NSWCPD), Code 0232 plans to Award of a Firm-Fixed-Price (FFP) Indefinite-Delivery Indefinite-Quantity (IDIQ) contract and subsequent Delivery Orders on a sole source basis to L3Harris Technologies for the procurement of Universal Modular Mast (UMM) spare parts and cylinders. This is a follow-on contract to provide continuing support under Contract N64498-21-D-4022.