Well, other than Shooter 13, I've gotten no replies to my inquiry. Sooo... I guess I'll just "wing it". I've seen these sights on web photos and various web sights; they look like what I'm looking for, so I'm going to give them a try. If they work out, I've got several handguns to put them on. (Just got a new xd45, a 5" tactical mod so I guess that's the one that'll go in first.) Will let you know how they work out for me later.