Board Thread:Unanswered Questions/@comment-75.95.173.188-20150423000614/@comment-1824272-20150423021353

It's not clear what you're talking about. If you're talking about aircraft parts, then yes, as Sylvered said, UGB parts do affect MUGBs. However, if you're talking about leveling up a special weapon, like increasing the UGB from Lv.1 to Lv.2, then no, that doesn't affect MUGBs since they are their own special weapon and must be upgraded separately.