Vortex viper 1x24 mm 6 moa red dot sight, black - Vortex Viper 1x24mm Reflex Red Dot Sight

I purchased this Vortex Viper 1x24 mm 6 MOA Red Dot Sight for a Ruger American Pistol, 9mm competition model. It fits like a glove on the machined slot of the slide. I have shot over 1000 rounds since installing the Vortex Viper and it has held its position. I wanted a lower profile Red Dot so I could still use/have access to the original iron sights on the pistol and have the benefits of the Red Dot sight and the Viper fit the bill. For the distances I shoot, a dot size of 6 MOA was best and I like the 10 brightness levels. I use one of the lower dot light levels at the indoor range or when I am dryfire training at home as that also gives me the smallest dot size with my astigmatism, but I can use the brighter levels when shooting outside. I am okay with having to remove the Red Dot to change the battery because at the brightness levels I use, I should get around 20,000 to 30,000 hours of operation before that is needed.
Vortex as a company has been great to work with. I contacted them to see about buying an extra rubber cover for the Viper and they sent me one at no charge! Thank you, Team Vortex.