I guess here's the answer concerning AMRAAM deliveries. Interesting to read that as per ATK, US environmental laws lead to a change in the formula for the missile's propellant, resulting in less than satisfactory results. At least Norway's Nammo has been able to pick up the ball.
Raytheon resolves AMRAAM production issues
by Dave Majumdar
Flight International
29 November 2012
Raytheon expects to recover the production schedule of its AIM-120D AMRAAM air-to-air missile in mid-2013, says chief executive William Swanson.
The company has certified Norwegian ammunition supplier Nammo to build rocket motors as a substitute after the engine's original vendor suddenly developed problems with the chemistry of the rocket propellant.
** See full story linked at title. **