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

Rimmy, I have fiddled around from the base you provided, and added a fps component that you can shoot at the mesh and the projectile tears off the limbs.

Theres something weird going on with the torn limbs though, they get weirdly stretched out into infinity…I suspect there is something wrong with the setup of the mesh or the fact that it gets hit by a projectile which in turn adds radial impulse at hit location.

check the screen for what im talking about.