Thanks for the very informative and detailed explanation of what the upgrade is Bill. My 686 had been in the closet all these years when I was not very interested in weapons...too busy working and raising a family. I got interested in firearms again when I retired and started subscribing to the various gun-forums and just ran across a thread one day concerning the early 586/686 recalls. There must still be quite a few of them out there that have never been sent home for the fix and I know a few folks that have been "on the fence" in deciding if they should send theirs back or not. Some of these older guns have been little-shot and are in pristine condition with blued or nickel finishes and some guys are just afraid of sending them in and facing the possibility of accidental mishandling or damage. We all know they don't make these NL guns anymore.