The UltraDot Red Dot Sight is ideal for a number of applications. It is compact and lightweight making it well suited for use on a handgun for either target shooting or hunting. The sight is also extremely rugged, capable of handling the most powerful recoil. The 4 MOA dot features adjustable brightness via an 11 position rheostat, allowing for use from dawn until dusk. UltraDot Red Dot Sights are covered by a lifetime factory warranty. This sight comes complete with a battery, polarizing filter, tube extension, mounting rings and hex wrench.