lostsniper,
Are you talking about putting something like a leveling foot onto the rear of your stock for bench shooting?
If that is the case, cpj's suggestions about the threaded insert would be a great idea. The plastic on the Survivor is a bit thin for tapping.
What do you plan to use to support the front when shooting? Sand bags, sticks, bi-pod...?
Just curious because I have also thought about using a leveling foot for a rear support
Thanks,
RackWrangler