This is a sources sought notice, not an open solicitation, for a Resolver Assembly used in the 30mm Armament Subsystem XM139 to ensure turret pointing. The required base quantity is 27 units. Interested parties must undergo qualification testing and evaluation to become an approved source. Source approval does not guarantee business but only provides the opportunity to compete on future solicitations. Additional details are available through the Army's Source Approval Program and SAR package requirements.