Hoot,
It all depends on the original finish. If it's an oiled stock then some damage is inevitable, but sound polyurethane is pretty bomb proof. It sticks on well and is impervious to a lot of the solvents that might use to remove any glue residue.
Many adhesives fail at low temperatures, so 48 hours in the freezer might help things along. I've used that technique (not on guns) and sometimes it works, sometimes it doesn't, but there's nothing to be lost.
Best I can do,
Eug
Last edited by eugene molloy; 11/29/15 06:53 AM.