Rifle Scope Parts- The Structure of Rifle Scope

Last updated on June 3rd, 2022 at 11:03 am

Don’t miss your target-because experts never! To get master with your rifle, you need to put a convey on the rifle scope parts that allows to magnify your target with great accuracy but also provides you safety-that is the scope. Studying the structure of rifle scope will help you get straight with your shooting much efficiently. Putting a cause to the study is that it will help you in the field and you don’t have to figure out tiny parts & their working especially when you will be needing it the most.

The different structural rifle scope parts are discuss as;

Adjustable objective (AO) riflescope

Objective Lens

The objective lens is the front side of the rifle use to transmit light back near our eye because it locate at a larger distance from our generally, greater the magnifying power, the larger will be the objective lens and vice versa. A bigger lens provides you clear and bright picture of Target.

Objective Lens diameter

Mostly, the range of diameter of the objective lens for scope is between 32 mm to 44 mm. A larger diameter means a large and clearer picture for larger magnification and vice versa.

Weight of Objective Lens

We must use a standard weight lens not so much bulky and heavy. A larger lens means large weight. So, we must adjust according to the size requirements of the lens.

Glass Quality Used for Objective lens

Quality of glass is very much important, as we have heard about the larger objective lens means larger magnification but it also depends on the quality of the glass to get a clearer and brighter image.


It is very cheaper and efficient than other lenses-gives a clearer picture. Small objective lens cannot be used for larger range and having no recoil tendency. Medium objective lens provides sufficient range and lower weight. Larger objective lens is used for higher magnification and having efficient range and having clearer picture but having bulky size.

Objective bell

An objective bell´s purpose is to protect the outer lenses from dirt, scratches, rain and snow. It’s a “cup” that covers the objective end of the scope. Some are longer than others, but most will have a rubber coating or plastic lips to prevent accidental damage from improperly mounting the scope. The rubber O-rings that come with the scope will work just fine – if you’re careful when you put on your scope.

Scope tube

Hawke Airmax 30 FFP Riflescope SF 4-16×50/6-24x50 AMX IR -Black - Walmart.comScope tube come in standard sizes to allow for interchangeability. 1-inch (25.4 mm) and 30 mm (1.18 in) are the most common sizes, with 34 mm (1.34 in) being available on some high-end scopes such as Schmidt & Bender PMII. The scope tube itself is not prismatic, i.e., not corrected for parallelism, so that a reticle placed at the focus of the ocular lens will appear to move slightly off center when focusing on close objects and moving the focus adjustment knob on fixed-power scopes.

Windage Turret

It is used for adjusting horizontal alignments of the reticle. Alignment is measure in MOA (minutes of angle) and MRAD (milliradian). We can adjust windage turret by hand or screwdriver.

Elevation Turret

Elevation turret allows the vertical adjustment of the reticle present on the top of the scope. Windage Turret and elevation turret work very much in the same way. It adjusts the point of impact to meet the point of aim. It is use to compensate for distance. elevation is measured in minutes or in MOA (minute of angle).

Zoom / Magnification ring

Hunting Scope Switch View Throw Lever Power Ring 44mm/45mm Diameter Magnification Adjustment Mount Riflescope Accessories - Scope Mounts & Accessories - AliExpressThe Zoom / Magnification ring is the wide ring in front of the eyepiece that houses the zoom lever. When looking at a fixed power scope, the Zoom / Magnification ring will be engraved with one number (i.e. 4x, 6x, etc.). On variable power scopes, the Zoom / Magnification ring will have a range of two or more numbers (i.e. 2-7x, 3-12x, 4-16x).

Magnification lens

The magnification lens is the part of the scope that magnifies your target. You can adjust this with a knob on the side of the scope. It’s important to note that while you may see scopes with different numbers of magnification, there aren’t actually different lenses—all scopes have one magnification lens, and what changes is how much it magnifies your target.

Ocular focus

The oculars are the two tubes that connect to the eyepiece. They are adjustable and can rotate to allow for fine-tuning of the focus.


The eyepiece is made of glass and is where you look through your scope. It can be adjusted for magnification by rotating it in or out. The eyepiece has crosshairs on it to help you sight your target.

Ocular Lens

To magnify the light of the focal point i.e., the picture showing on the lens of objective lens, ocular lens is used. To clearly focus on the Target and to give vivid picture to the hunter ocular lens is used.

Eyebell housing

Eyebell housing is the part of the scope that holds the lens. It can make in metal or plastic and is usually thread to screw into the barrel.

Illuminated reticle (IR) battery cap

The Illuminated Reticle (IR) Battery Cap is a part of the [product name] rifle scope, which is a product that can be used for hunting, shooting, and other activities where you need to see something in the dark.

This cap covers the battery compartment so that you don’t accidentally turn on your IR system while carrying your rifle.

Illuminated reticle (IR) turret

The illuminated reticle (IR) turret is the part of your rifle scope that allows you to adjust the brightness and contrast of the crosshairs. This is a useful feature when you’re trying to shoot in low light, or when there’s a lot of glare on the target.

Hawke riflescope rheostat close up images

To use the IR turret, simply turn it until it’s in the position you want. The red ring around it will glow as you do so, so you can see how much light is being transmitted through your scope at any given time.

Side focus (SF)

The side focus (SF) is a ring that allows you to adjust the focus of your rifle scope. This is useful if you’re having trouble seeing an object clearly through your scope and want to adjust it so that you can see it better.

Side focus riflescope

Adjustable objective (AO)

Adjustable objective (AO) is a special type of rifle scope that allows you to adjust the objective lens. This means you can change the size of your image by making it larger or smaller.

Reticle or Cross Hair

Reticles or Crosshair are used for measuring on the objective lens in origin they were made of hair, so they are also called Choice of a reticle is very crucial aiming at different positions.

Parallax (term for distance)

The PARALLAX is inversely proportional to the distance of target. The more is the distance, less will be the movement or displacement of observer or hunter from the already position. Parallax is measured by one divided by parallax angle equals to distance of the start.

Power Ring of the Rifle Scope

To change the magnification of the riflescope power ring is used. Shorter and longer magnifications can be adjusted by using power ring of the rifle scope.

Exit Pupil of the Rifle Scope

It is placed on center of the scope. For larger and brighter picture, the objective lens of large diameter should be used. Exit pupil can be measured as: Diameter of the magnification power divided by the magnification power.

Eye-relief Point of Rifle Scope

Eye-relief is use to see clearly without any obstruction. It is measure in inches and millimeter. As the eye relief range of any rifle scope for coyote hunting or other causes would be different. To protect the shooter‘s eye, it is made of extension device. Eye relief is adjustable with the movement of the rifle scope according to the position of the shooter.

How to Mount the Rifle Scope

The whole process of mounting the rifle scope can be explained as;

How to Work Best with the Rifle Scope

The choice of scope depends on the shooter‘s choice of shooting. Good quality rifle scope should be valued than rifle because we can easily hit the target having low grade rifle. While using rifle scope following things should be taken under consideration

Choosing Comfortable Position

To aim at your target the hunter or shooter should have taken the comfortable position while shooting. The head and neck should be adjust carefully while firing.

Mounting the Rifle Scope

Make sure that you are with all equipment need. The important ones are scope screwdriver, wrench, and the unloaded rifle. Apply a thin layer of oil on your rifle scope and screwdriver before putting them on to work so that they become noiseless and smoother.

How to Zero a Rifle Scope?

Types of Rifle Scopes

The different types of rifle scope depend on the type of magnification factor and the structure as well-the most renowned and basic sorts of rifle scope are given below;

Fixed Scope:

As the name shows it is having fix magnification not adjustable like other rifle scopes. They have generally low prices.

Variable Scope:

You may have series of choices to adjust your magnification size of your choice depending on the position of the hunter. You can zoom in or zoom out to get clear picture of the target.

Night vision scope:

If you are hunting in low or no light Night vision scope is use to clearly see and hit the target due to build in illuminator in the scope that allows to see in full or no light.

Tactical Scope:

Usually, they are use by military to hit the target at a shorter range having low magnification level.

Long Range Scope:

This scope Is use to hit the target at long having higher magnification level and for efficient working.

Hunting Scope:

They are create as weather-resistant to get a clearer image of the target mostly use by hunters.

Competition Scope:

They are made heavy, large, and of low quality use in competition shooting.

Sniper Scope:

This can be adjusted easily used by rifle scope experts giving large information to the hunter.

Scout Scope:

They have limited adjustability like tactical scopes used by military and hunters.

Red dot scope:

A red dot is shown as a target having no magnification level not suitable for long ranges.

The Different Types Of Rifle Sights And When To Use Them

There are many different types of rifle sights, and each one has its own benefits.

Fixed Rifle Sights

Daniel Defense DD Fixed Front/Rear Sight Combo : Red Dot And Laser Sights : Sports & OutdoorsFixed rifle sights are the simplest type of sight available to shooters today. They consist of nothing more than an aperture (hole) in the front blade and an open notch in the rear blade that allow you to see through them. The aperture is adjustable for elevation using a windage screw on top of the sight, while adjusting for windage is done by moving it left or right along its dovetail mount. The aperture needs to be adjusted for elevation at 100 yards, but not for windage unless you’re shooting at a range other than 100 yards (e.g., 200 yards).

Variable Rifle Sights

Sun Optics 5-30x56 Ultra Variable Riflescope CS40-53056IR B&HVariable rifles scopes have adjustable magnification and offer several advantages over fixed-sight models:

They provide more precise aiming because they allow you to see your target clearly at longer ranges than fixed-sight models do; thus, they improve accuracy when shooting at long distances.

Open Sights

Open sights are the most basic sights, but they’re also the easiest to use. They consist of two small holes in which you can look through and align with your target. Marmot Flip Up Iron Sights A2 Front Sight & Rear Sight for Gun Rifle Handgun : Sports & Outdoors

Open sights are ideal for shooting at close range (less than 100 yards), where it’s easy to line up both holes without much help from magnification. Open sights are also know as “iron” sights because they use metal parts instead of glass lenses or other materials.

The only downside to open sights is that they don’t work well in low light conditions, such as when hunting at dawn or dusk.

Red dot sight

Red dot sight is the most popular rifle scope parts on the market today. They are easy to use and provide a very fast target acquisition.

AT3™ Magnified AR-15 Red Dot with Laser Sight Kit | LEOS and RRDMRed dot sight work by using a red laser light to project a dot onto the target. This makes it easy for the user to line up their shot, even in low light conditions. The red dot will be visible through any type of lens, whether you’re looking through glass or plastic. This is why they’re so popular among law enforcement departments and military units who need to use their scopes under any conditions at all times.

The biggest advantage of red dots over other types of rifle scopes is that they provide a much clearer picture than traditional scopes do. In fact, some people like them so much that they’ll only use them on their rifles instead of traditional scopes altogether!


The structure of the rifle should be taken into consideration even after or before getting your hands on the relevant rifle scope for your weapon. Acknowledging the structure will help you identify the best of rifle scopes according to your taste as well as according to the point of measuring the quality.

This guide holds the information about some of the crucial key factors that need to be consider into the study. The parts that are keenly discussed are-objective lenses, ocular lenses, windage turret, elevation turret, and the working of the rifle scope. In the least, the discussion is close on the types of rifle scopes that are many but each one has its own specific features thus clearing their importance. These sorts of riflescopes are use in different fields depending on their working and magnification level. Therefore, the quality and compatibility of the rifle scope should be up to the mark so that will get the shooter a clearer picture of the target.


Q. How tight should a scope mount be?

A. The scope mount should be tight, but not too tight.

If it is too loose, the scope will move around in the mount and may become damage. If scope mount is too tight, you may have to force your rifle into position, which could cause damage to the weapon as well as yourself.

Q. Where should a scope ring be placed?

A. Scope ring are designed to fit on the top of your scope and hold it in place, which means they should be placed as close to the center of the scope as possible.

The best way to do this is by placing the scope ring directly over where you want your crosshairs to be.

Q. Should scope rings have a gap?

A. This is a question we get ask all the time. And it’s a great question!

The short answer is… yes, you want to leave some space between your scope and the ring. That way, if you ever need to remove your scope, you’ll be able to do so without having to damage either piece of equipment.

Q. Where are Vector Optics scopes made?

A. Vector Optics scopes are made in the USA, in a facility locate in Tucson, Arizona.

Q. What is a QD sling mount?

A. A QD sling mount is a quick-detaching sling mount for your scope, which allows you to easily switch between different types of slings. You can also get it in a low profile or high profile. The quick detach feature makes it easy to remove your scope from the rifle when you need to, and then attach it again when you’re ready for action.

Q. How far can spotting scopes see?

A. A spotting scopes can see much farther than the naked eye can, but it’s not always clear how far. The answer depends on a few factors:

  • The magnification of the scope
  • The size of your objective lens
  • The type of terrain you’re looking at
Q. Is a spotting scope better than a telescope?

A. A spotting scope is a type of telescope that’s design for high magnification and wide field-of-view, making it ideal for hunting and bird watching.

Spotting scopes are typically use for long range hunting and observation, whereas telescopes are better suite to close range observation and stargazing. The main difference between the two is their magnification, with most spotting scopes offering between 10x-40x magnification, while telescopes range from 7x-50x.

Q. What do the magnification setting mean on a rifle scope?

A. The magnification setting on a rifle scope is the number that tells you how much closer you’ll be able to see your target. The higher the number, the closer you’ll be able to see it.

For example, a 1x magnification setting means that what you see through the scope will appear exactly as it does without the scope. A 4x magnification setting would mean that what you see through the scope would be four times as close to what you would normally see.

Q. What is light transmission rate?

A. Light transmission rate is the amount of light that passes through the scope lens when it’s focus at a distance. It’s measure in percentages and is calculate by dividing the amount of light passing through the lens by the total amount of light that entere the scope in the first place.

Q. What is an example of light transmission?

A. An example of light transmission is when you look through the scope and see what’s on the other side.

Q. What does focal plane mean in rifle scopes?

A. In a rifle scope, the focal plane is the point at which light rays are focus.

The range of focus for a rifle scope depends on whether it’s a short-range or long-range rifle. The terms “short” and “long” refer to the distance between the target and the person shooting it – if you’re taking shots from a distance closer than 300 yards, your scope will be set up for short-range shooting. If you’re taking shots from a distance farther than 300 yards, your scope will be set up for long-range shooting.

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