How would I go about destroying certain parts of a skeleton ?

hi there,

Im playing around with a prototype, and trying to get “hit zones” of a sort…so that when I would hit certain parts of the enemy mesh, it would destroy whatever it hit. So if I hit an arm, the arm would get destroyed, if it hits the leg, the leg would get destroyed…etc.

at the moment im thinking like this : I have 4 overlap detection volumes, that when they overlap with the projectile, they ping. But now I dont know how (if at all possible) to call that specific area of the body hit, to get destroyed

any ideas ??