Have one on my sig Rx. Took me a lot of rounds to get use to it. After many years in law enforcement and always trained to find the front sight quickly. I have to mentally tell myself to forget about the sight. I discovered from a low ready, raise the gun I had to adjust to find it. If I bring the weapon up and then punch out I can see the dot immediately. Practice, practice, practice. This is the future. Just like Glock took over the law enforcement market, agencies are stating to allow red dots on service weapons. You know how it is, good or bad, the general public will start following the same thing the military and police use. Probably within three years most weapons will come from the manufacturers milled for one if it takes that long