There's also a new extended-range version of AMRAAM (AMRAAM-ER): "AMRAAM ER is made up of the front-end of an AMRAAM missile and the back-end – or the rocket motor – of Raytheon's Evolved Sea Sparrow missile (ESSM), Raytheon's Michael High said in a Sept. 28 interview. The configuration gives the missile a 50 percent increase in maximum range and 70 percent increase in maximum altitude." See: https://www.defensenews.com/digital-show-dailies/ausa/2016/10/04/raytheons-extended-range-amraam-missile-destroys-target-in-first-flight-test/