Viridian Weapon Technologies is devoted to applying cutting-edge technology to design compact"" powerful self-defense products for the civilian"" military and law enforcement markets. Viridian's GDO25 green dot features a true co-witness sight picture for use with your backup iron sights when using their riser mount or you can opt for their low mount for use on a variety of different platforms. With unlimited eye-relief and true parallax free"" this green dot will be the perfect fit for your favorite rifle or shotgun.