If some of your figures are like mine, they can't stand, can't hold a weapon up, loose hinges and ball joints, this stuff works.

KIKI product Ebay link

Works great on hinges and ball joints and mushroom pegs. It's thin enough to work its way into the joints without having to take figure apart. Fairly cheap and you don't use much so a bottle should last quite a while. Recommended. Some YouTube videos are worth a look to see how it works