The answer is maybe it can be done but you need to look at the stock closely. Is the grip end tightly inlet? Is the grain flow good? Is the grip large enough for a fillet of wood to tie both grip and butt together? Can the glueline be hid? If the answer is no to any of these questions the I would pass on trying the job. You could always do an extension and have the grain enhanced to blend it. Much easier job. Do a search here to see what can be done.