I wanted to add a lanyard ring to my LCRx and decided to do some research. Found an Unkle Mike's "1 (10112) Swivel for a rifle and learned the bolt for the grips was a 8-32 and measured 1.25 inches. I. noticed it was too short and replaced it with one that was 1.5 inches long anti worked like a charm. The gun I put this on was a .357 with a 3 inch barrel. It should work for any of them though. I figured I would post in case any one else wanted to do the same for their gun. Let me know what you think!