First of all, these sights are very difficult to install unless you have a perfectly sized punch and a thick rubber mat to avoid damaging the pins. That said, now that the sights are installed I LOVE them. They are very bright and easy to see. With the factory iron sights on my Buckmark I could consistently peg the bullseye 18 rounds out of 20 at 15 feet. The rear fiber optic sight can not be lowered enough to give me the same sight picture and it has taken a while to get used to the new one. The factory sights are also very slightly wider than the Williams sights, this causes a very slight variation left to right. Now that I'm used to the variations and checking to make sure the rear sight is centered before I go to the range, I have no problems with the Williams sights and would recommend them to anyone with the patience to put them on.
This review was written in the old system and had content requirements that are different than reviews written today.