I am using the Recknagel rear sight on my Ruger Magnum in .416 Rigby and I like it better than the original express sight. It is installed "reverse", the sight is angling backwards to prevent any reflexions from sunlight. Right now I am buying a double in .470 and will have the same sight installed, but this time with a better front sight. On the Ruger I played around with a fiber optic front sight but as other members already know it gives a somewhat fuzzy sight picture and is very delicate too. So now I will use the Recknagel in connection with a brass front bead. The Recknagel rear sight is very sturdy and well made, I think it`s a very good sight for close range combat with unsocial kind of game.
Maybe one day I will try the Recknagel Masterpiece front sight , I very much like the idea of changing the front sights as well as the possibility to adjust them for elevation.