My opinion on these sights has changed. After 5 months, they worked loose. My gunsmith tightened them, but they loosened again. He said the sights were too small for the dovetail in the slide.
Pros: easy to use; expense; easy for gunsmith to install
Cons: After 5 months, sights worked loose.
This review was written in the old system and had content requirements that are different than reviews written today.