This is a market research notice to identify potential suppliers for AN/PVS-31D night vision devices and related accessories to support a Foreign Military Sales case for Colombia. The required quantities are 13 viewer kits and 19 mounting mechanisms, with specific technical and accessory requirements. Responses must include a Rough Order of Magnitude (ROM) for price and availability. Any resulting contract would involve cybersecurity compliance and specialty metals restrictions. The performance location is not specified, and no budget or procurement timelines are provided.