Choosing the right pistol red dot sight can be the difference between hitting your target and missing your target. The three most important things to consider when searching for a red dot is the size of the reticle, the color of the reticle, and the power source. The size of the reticle can range from 1 MOA to over 10 MOA, for reference a 10 MOA red dot will cover 10 inches at 100 yards. For color most red dots will have a red reticle but some have other options like green or amber. Most red dot sights are battery powered but some brands like Trijicon and Holosun offer solar powered red dots.