This Axeon Optics dot sight is not your average Red dot. This dot sight has 11 brightness setting to allow you to adapt the sight to your vision and the various lighting conditions you may find yourself in. The Axeon dot sight easily mounts to standard Picatinny or Weaver rails and even an 11 mm dovetail rail. It has a generous 30mm 1x field of view and a 5 MOA dot size.