The U.S. Coast Guard anticipates a firm-fixed-price purchase order on a sole-source basis for three Door Mod, Weather RA units (NSN 1560-01-HS1-3807; P/N 27426/5790066-501), with an optional seven additional units up to ten total at the same price and lead time within 365 days after award. Requested delivery is 10-MAR-2027, and award is anticipated on or about 10/27/2026. Offerors must provide clear traceability to OEM Helicomb International (Cage Code 6W159), a manufacturer’s certificate of conformance, and their own certificate of conformance under FAR 52.246-15; no drawings, specifications, or schematics are available. This is an unrestricted requirement under NAICS 336413 with a 1,250-employee small business size standard, and only the requested items will be considered for award. Interested parties should review the attached terms and conditions and redacted J&A for applicable clauses, instructions, and evaluation criteria.