ASRAAM has a 6.6" body diameter and weighs almost 30lbs more as a fuction of being fitted with a 1990's generation motor while AIM-9X uses existing (AIM-9L/M) stocks of 1970's tech base, 5.27", Mk.36 motors.Ozzy Blizzard said:i was just wondering how these two missiles shape up. they're both look down shoot down capable right? Why did the RAF and RAAF go with ASRAAM? Is the USAF going with AIM 9X? Whats the differance in detection ranges, acuracy, payload and range? What's the better system?