I haven't put it on the gun but there are plenty of reviews for using the sight...
for the refurbished/blemished sight ~ I've gone over it closely. I see no issues with finish or quality of the sight. Seems like a steal of a deal, I'm thinking about buying a second while they're available and so inexpensive
I like that you can use one or both eyes,I mostly use both eyes, I work a lot of times alone in remote areas and Bear and Mountain lion is a concern ,now there’s only been one bear attack in 30 years I know of ,so I don’t have to worry if it’s on , Quick and accurate dependable No batteries to go dead and weather !