As noted in the firearms chapter, many rifles, shotguns and handguns feature a sight, which is a device that helps a hunter take aim. Here are three categories of common sights:
Consisting of a main tube with lenses to magnify distant objects, it has line reticles for lining up the center of a target (i.e., where the horizontal and vertical reticles meet). This sight is mounted on top of the barrel or action of a firearm. Since it is easy to use, it is a good choice for novice hunters. The telescopic sight is available in fixed powers and some models have an adjustable ring that the hunter can use to select different powers of magnification.
Aperture or Peep Sight
Usually mounted at the rear part of the rifle action, this sight has a base and a raised ring. It is adjustable for vertical and horizontal movement. Aim at a target by mounting the firearm and peering through the peephole of the rear sight, centering the front sight within the circle of the rear peep sight. The front sight can be a metal post with a ball on top or just a metal post. This category of sight is common on target rifles.
Featuring a notch or cut at the rear and a single post at the front or muzzle end of the barrel, open sights are common features on rifles and pistols. Many of the newer open sights have the front and rear sight made of fiber optic material of contrasting colors, that gather light and are easier to see in low light.