Great ideas all Joe. I'll try the epoxy approach first and see where it takes me. The screw driver slot will certainly work well although I will not have use of the detents then. I was chasing another identical Armstrong on eBay last week but got sniped at the last minute. I like the Armstrong sight because it fits contoured, as well as flat sided, recievers and is very Lymanisk in it's quality. I appreciate your input Joe. Talk to you later. Terry