This is a sole-source procurement for quantity 2 of NSN 4Y-4820-014321296-L1, a Level 1 item restricted to approved sources. Performance and delivery will be at Portsmouth Naval Shipyard in Kittery, ME. Offerors must have an inspection system conforming to MIL-I-45208A or equivalent, certified by a joint DCMA/NAVSUP WSS survey team. The government intends to negotiate with only one source under FAR 6.302-1, but all responsible sources may express interest and capability. No budget amount is specified in the notice.