The latest offering from the Swedish company Aimpoint is the Micro red dot. This tiny unit is built to the same stringent quality control standards as all the Aimpoint products, but is in a minuscule package mountable on almost any firearm with Weaver style or Picatinny rails. The Weaver base is integral with the unit, and being one power, has no particular eye relief requirements. You may install it on a shotgun, rifle, or handgun, and it is parallax free. It uses a single CR2032 battery and will last in the on position for five years continuously on setting eight out of the 12 brightness levels. It is submersible to fifteen feet, and will withstand the recoil of anything you can mount it on. This is the cream of the crop of red dot sights.