The Army Contracting Command is conducting market research to identify potential sources for fabricating and delivering the MK19 40MM MOD3 and/or MOD4 Grenade Machine Gun, including spare parts, barrel assemblies, and training for Foreign Military Sales. The First Article Sample must be submitted 270 days after contract award, with monthly production deliveries starting 60 days after government approval, ramping from 75 to 130 units per month, and potentially up to 175 units. Performance of services may occur in CONUS and OCONUS locations for training, but no specific location for primary work is mandated. No budget amounts are specified in this sources sought notice, which is for informational purposes only and not a solicitation. Interested parties must submit a capabilities statement by 5:00 p.m. EST on 5 June 2026 to the specified contacts.