According to the report of JANE'S MISSILES AND ROCKETS - SEPTEMBER 01, 2004: http://forum.keypublishing.co.uk/showthread.php?p=441184&highlight=fair+use#p
ost441184)
For USAF and USN:
AIM-120C7 (Undergoing operational testing in 2004)
* Same rocket motor as AIM-120C5
* Upgraded processors and software
* Upgraded radar signal process to enhance electronic counter-countermeasures
(ECCM) capability
* 'hockey-puck'-shaped printed circuit cards (instead of normal rectangular
shape) to save a 6in lon