The Naval Surface Warfare Center intends to award a sole-source IDIQ contract for the Mk 200 Mod 1 Propelling Charge, limited to vendors within the U.S. and Canada. This charge is a modification to the current Mk 200 Mod 0, using a brass cartridge case to increase supply for the Mk 45 5” Gun Weapon System. Responses to this sources sought notice must be submitted by email no later than June 12, 2026. Interested parties should provide company details, capabilities, and delivery timeframe. No budget amount or performance location is specified.