Ruger 22/45 (with a Matchdot sight), Kimber .45, Astra 400 9mm and Sauer 38h.
They've all been clean and re-vaulted. The Ruger is still the toughest to take down and re-assemble. The Astra is next, then the Kimber. The Sauer is dead simple.
And the Astra was fixed properly and no longer doubles. A tough slog, the gunsmith told me, since the serial numbers for the slide and frame didn't match. Live and learn.