This amendment changes the required quantity of C-130 Fuel Pressure Indicators to 8 each. The item must be Ametek-manufactured, new/unused, with documented history tracing back to Ametek ownership, and only NSN 6620-01-394-4019 LG / PN 10401N01P00 is acceptable. The effort is a competitive small-business set-aside, firm-fixed-price repair contract purchase order. Delivery is 8 units ARO 30 calendar days, with inspection and acceptance at the contractor facility before delivery. Questions are accepted by email only, and all questions and answers will be posted to SAM.gov without identifying the offeror.