The sling swivels that come with the Ruger 10/22 target rifleare perfectly adequate. They are quite strong, of reasonable width, and function just fine for normal everyday use. What they don't do is allow the use of detachable sling swivels. The units installed by Ruger, while of good quality, have studs that are not drilled all the way through. The sling attachments are simple pieces of bent blued steel that press into blind holes in the studs. The Fat Man wishes to use a detachable sling on his Ruger. For the upcoming Appleseed, I'd like to get my sling in position over my arm, and then simply detach it from the rifle as needed. So, the forward factory sling swivel on the Ruger was removed, and the pressed steel loop bent till it could be detached. Then, using a #27 drill bit mounted in a Foredom tool, the hole in the stud was drilled through. A Q-tip loaded with cold blue cleaned out the hole nicely, and touched up any bright metal left from the drilling. Shazam..... a tiny tweak which makes the rifle that much more suited to me. Sometimes its the littlest things that can make a difference.