SOME combinations of secondary components (rivets, lining, etc.) using utility gems can be improved. After extensive testing, it would appear that ALL primary support components for weapons (fulcrums, grips, shafts, etc.) using weapon gems can be improved. 'It is possible to use gems to strengthen some components to flawless, although it is unclear whether this is a bug or not. The fandom page has more instructions for it: Put in a component you want upgraded, put in a good gem, salvage. Also, you can get them by salvaging stuff you have crafted and enhanced with gems. Originally posted by Aldernut:So far the best way to get them seems to be with high blacksmithing skill, which affects the drop chance.