This a good sight to use for low light or even no light conditions. When at indoor ranges or outside in some pretty shady areas it can be hard to focus on the standard black front sight. When sighting you mostily just see the white outer circle, the green washes out in daylight, but at night or at poor lit indoor ranges the green really shines through. Only thing to mention is it did take a little filing/sanding to get it to fit.
Pros: Easy to use
Cons: required some fitting
This review was written in the old system and had content requirements that are different than reviews written today.