The Air Force awarded Raytheon [RTN] a $497.1 million firm-fixed-price contract Friday to procure 50 Advanced Medium-Range Air-to-Air Missiles (AMRAAM).

According to Air Force spokesman Capt. Matthew Stines, delivery of these missiles start February 2014 and all are to be delivered by Jan. 31, 2015.

The Defense Department said the contract is for “missiles, instrumentation units, test equipment, guidance sections, hardware and contractor logistics support,” according to a March 30 statement. According to Stines, the deal also includes four AIM-120D Air Vehicles Instrumented (AAVIs), 129 AIM_120D Captive Air Training Missiles, 219 AIM-120C7 FMS AURs, six AIM-120C7 AAVIs and associated support. The location of the work is Tucson, Ariz.

According to an April 2 Federal Business Opportunities announcement, this is “Lot 26” of the production run.

Raytheon has come under fire lately for being behind in its delivery of AMRAAMs to the Air Force. As of Feb. 29, Raytheon delivered 359 AIM-120Ds against 552 required by contract, a difference of 193, forcing the service to fine it. Air Force spokesman Lt. Col. Jack Miller said Raytheon’s subcontractor manufacturing the AMRAAM’s rocket motor, ATK [ATK], has had difficulty “consistently producing rocket motors to specification requirements.” (Defense Daily, March 28).