Is it plastic? Simulated bone? Ground Bald Eagle skulls? Is the same material used across the line? (i.e., Les Paul Studio? Standard?Custom? Historic?) The nut on my Les Paul looks pretty poorly made...far from symmetrical. I've replaced the nuts in my Strats with bone. Does it make sense to consider changing it out to natural bone or some other material? Performance-wise it seems to function as others I've owned. Just looks like it was made by a boy scout at summer camp. I'm sidelined with an injury for a bit and thought about have some tweaks done to the guitar while recovering.