My players salvaged a couple of Ultras, LB-xs and Missile launchers from downed Ghost Bear mechs recently, They want to use them of course, but have limited ammo. They wanted to either customize existing IS ammo to suit their needs, but I was unsure if this can be done. If you have an Inner Sphere ton of AC/20 ammo, can it be shot out of a clan built UAC/20? Or does it have to be specifically CUAC/20?