I just installed a hi-viz front sight on my Ruger Mark III .22LR. My wife shocked me with her enthusiastic vote of approval for that improvement. When we last took it out for an afternoon of fun with some friends, we stayed until the light began to dim. And, those black on black sights became much more difficult for our aging eyes to get a decent sight picture. This was a nice improvement for a modest ($37.61 including tax) investment.