I have a set of Ruger rings on my old 10/22 and the heads on the screws are starting to strip-out. How do I know what size/type of replacements I need? I can't even remember what type of rings they are, looke kind-of like Leupold's ruger style rings.

Just about any good hardware store will have a screw thread checker or a set of calipers that will tell you what size and thread pitch you need. Just take one of your screws in with you and have them measure it for you.

Or, call Brownells and they can probably tell you what size they are...and be more than happy to sell you some.

Call Brownells and they will send you some replacements...1-800-741-0015