I put an ebony fore end tip on a Bishop stock once, and merely cut the original plastic tip off with a chop saw. (An example of one is no guarantee though.) The gun became a pretty nice truck/loaner rifle after making a few cosmetic changes to it by removing about a half pound of ugliness with a rasp.
On the chance, that there might be a metal spline or bolt in there somewhere, I would cut it a bit long with a hacksaw first and then, assuming nothing metallic was encountered, I would cut it again on a table or chop saw