If you ever intend to be accurate with firing a gun, you will need optics. Firing from the hip is not likely to net you a bird or deer, and most competitions prize accuracy. However, some optics are better for specific types of firearms. Using a scope on a shotgun, for example, is relatively rare. Here are some of the optics you may consider when outfitting a gun.
Iron Sights
From a DPMS AR 15 to a Glock, most guns come with some form of iron sights. While some, like AR 15s with a Picatinny rail, may not, they do accept a variety of iron sights, such as Magpul sights. These are usually metal or plastic and are considered the most basic of sights. They are no-frills but will help you with close-range targets. These are often used as backups, should a battery die or the other optic becomes damaged.
Fiber Optic
Fiber optic sights are an upgrade from iron sights, using light to create an easier-to-see sight. These are typically used on handguns and can help acquire a target faster than plain iron sights. A plastic or acrylic fiber optic rod gathers the light and will always be brighter than the surroundings. However, they do nothing when there is no light. For daylight, they are the best type of iron sights.
Night Sights
The best night sights use tritium, which can glow by itself without the need for light for a decade or more. It is slightly radioactive but not enough to be dangerous. This means you can use two green dots in the rear sight and one in the front to line up a shot, even in low light conditions. These are ideal for handguns, such as a Glock 35.
Red Dot Sights
A general category that includes red dot, holographic, prism, and reflex sights, all have a single red dot instead of front-and-back sights. Some, like prism optics, have fixed magnification on the lower end of the magnification spectrum. Red dot sights can be found on nearly any type of firearm and are often the optic of choice for those who do not need magnification.
Telescopic Sights
Finally, telescopic sights offer magnification, either fixed or a range that is adjustable via a dial. Telescopic sights are often used on rifles, making it easier to hit targets at mid-to-long range. Hunters likely will not need larger scopes, while target shooters might need the extra magnification. Mounts are needed for scopes, and quality can make a large difference in telegraphic scopes. Another factor is how much light is let into the scope, making it easier to see, while eye relief refers to how far away your eye can be from the scope.
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