Huh? You mean the Meteor? IRIS is a 25km infrared missile... accordingly, it's replacing the Sidewinder.
The 120C is 100km+ radar-guided, the only other option is the newer Meteor, for about 6x-8x more money per missile - that's an amazing piece of tech, mach 5, ramjet, even accelerates at the end etc but also ridiculously expensive at $2-3M apiece (!)...
Amikor először láttam, hogy mennyibe kerül, azt gondoltam, hogy MiG-21-est meg sem érné vele lelőni.