Fm's are the bane of my existence. However oneway to neutralise them effectively is to disarm them, this is tricky due to their DR and high rolls in combat, but if your Ranged Tactics are high enough you can get in a disarming shot. Once disarmed the FM becomes practically unable to hurt you, though it still takes a hell of a lot of effort and skill to hurt them due to the stupendous HR.
I've been thinking up loadouts to counter this but as of yet haven't tested them. But how about this for MA Grandmasters: Load up your primary GM tree, you can have two of the one point sub abilities (ie. Wooden Dummy and Machine Gun fists), get rid of all awakened or leave one if you need to. Load up Upgrade Master, using only the base abilities, to the Combat enhancement 1.0. This will give you some Upgrades to self buff with and raise your CT by 10. However, you won't have disarming shot this way. Test it out, I need to try mine.
