Very good for its price, the only downside was that the provided mount did not fit a 45mm air rifle barrel. I found another mount, the range is very far and visible from a great distance. In combination with a good scope, you can easily see your target even at night. The range adjustments are very precise, in millimeters from the target. For a larger weapon, the mount included in the package, which is for a 25mm barrel, will work. In the case of a 15mm air rifle, you will need to find a mount for a flashlight and it becomes an excellent fit.