Things I liked:It was easy to install on the grooved receiver of my Daisey Powerline 953 rifle. Using a peep sight like this is so easy to get the sight on target. Never miss at 10 meters. All you do is look thru the rear sight at the front sight. And you can't miss as long as you get the sight lined up wich id very easy to do. Things I would have changed:Not a thing.