Installing a Limbsaver 10403 on a Benelli M4 Collapsible Stock in Benelli Posted Thursday at 01:03 AM Quote 2 hours ago, ClackClackBAM said: This is very helpful! Now that I can see the process, I realize it's not as involved as I thought. I will get a forstner bit if necessary, but @StrangerDanger can a paddle bit be used with a battery drill? That's a good question because if one doesn't have the bits or a router set they aren't cheap. Especially if you are using a bit for a one time job. I wonder if a 7/8" hole saw would give reasonable results. Maybe not quite as clean. The sharpie method looks good. Rosin or baby powder might give a good representation as well if applied to the end of the recoil tube?