The bead sight is a simple round bead set into the top of the barrel near the muzzle of a shotgun. Some shotguns have a second, smaller bead about halfway back on the barrel. The shooter uses the shotgun to “point” at and follow a moving object. The bead is used only for a reference as the shotgun is pointed and moved to follow flying or running targets.
Alternative Shotgun Sight
The most common alternative sight for a shotgun is the optical sight made with a fiber-optic tube which glows slightly in natural light aiding the shooter to easily see the sight peripherally while shooting at a target.