Mounted to my Glock 17 and adjusted site quickly. I was able to switch to MY Glock 22 and only needing to adjust the site horizontally. Able to fit in my current shoulder holster. Less than 1/2 the price of others. 4 inch grouping. 300 rounds with no problems.
Pros: Price
Cons: Thumb screw
This review was written in the old system and had content requirements that are different than reviews written today.