Schroedingers Cat from United States, MA Public Profile

These sights are excellent. Full stop. The fiber optics are clear and easily acquired making them great for indoor rimfire target shooting.

The REAL trick of these sights is that Ruger and Williams apparently use the same manufacturer for their rear sight bases, IF you have the NEW Ruger Mark IV sights. In that case, all you have to do is unscrew the adjustment screw and take off the rear sight windage carrier and aperture from both sights and swap them. You don't have to mess with the dovetails, etc. and it takes 5 minutes and screwdriver.

So, how do you know if you have the new Ruger Mark IV Sights? The "new" (2019-ish generation) sights have the rear sight blade integrated into the rear sight windage carrier. If your sight uses rear aperture that is a flat metal piece that slides in a thin groove in the sight body, then that is the OLD style sight.

The only downside is that you had to essentially purchase a second, unnecessary dovetail mount base. Or you can upgrade your pre-2019 Mark IV or Mark III.