The Parts Of A Rifle Scope – Everything About Rifle Scopes 2021

A riflescope is small but one of the most important equipments of a rifle. A riflescope is basically an optical sighting device that allows you to see your target much better for accurate shooting. Though it is a small device, it is made with a large number of components. Do you have a clear idea about all of them?

Having the idea about all external parts of the scope is essential. Knowing the parts of the scope means knowing the scope. Yes, this statement is very much true. You can’t go for using the scope until you know the parts clearly. So, let’s move on.

Parts Of A Rifle Scope in 2021

If you are going to use a rifle scope for the first time it is important to get some knowledge about the tool. It will help you to use it with better accuracy. Here in this article, we will discuss about some of the top features of the rifle scope.

Parts Of A Rifle Scope


It is one of the parts of the riflescope which you may hear about. It is basically the part of the riflescope where the ocular lens is situated. Some models of the riflescope’s eyepiece include an adjustment equipment to allow you to adjust the focus of the reticle according to your target to get the best view.

Ocular Lens

The ocular lens is the front lens of the scope. The ocular lens is smaller when compared with the objective lens. Usually, the main function of the ocular lens is gathering the light in the other part of the scope ( in the objective lens)l. Normally the ocular lens comes with different level of coating to make it waterproof and weatherproof as well as increasing light transmission. However, not all the riflescope may come with coating in the lens. So you will need to use them carefully.

Windage Turret

The windage turret is an important part of the riflescope which allows you to adjust the horizontal alignment of the reticle. It is normally located at the right side of the riflescope. To adjust the alignment there are clicks. Usually, the windage alignment is done by hand. However, some riflescope requires screwdriver or small coins for adjusting. Normally the windage turret alignment is measured in minute of angel (MOA) or mill radian (MRAD). Some manufacturers allow you to choose a certain level of adjustment as per you want.

Power Ring

The power ring is an adjustment component of the rifle scope which allow you to adjust the magnification level of the rifle scope. Almost all the rifloescope available in the market has it. It is also an important part of the rifle scope. You can zoom in and out your target for a better view using this adjustment. Normally, the minimum and maximum adjustment of the riflescope depends on its specification. As an example, if the rifle scope come with 3-15x magnification level then it means the riflescope can zoom in the target from 3 times to 15 times closer to the shooters eye. There are some scopes available in the market which comes with a fixed magnification level. That means you will not be able to adjust the magnification level in these scopes. check also How to Adjust a Rifle Scope Properly in 6 Easy Steps

Scope Tube

The scope tube is the bridge of a riflescope which connect the ocular lens and the objective lens. Normally the scope tube is one piece of solid metal. The interesting thing about the scope tube is they only comes in two size which are 30mm and 1-inch. The scope rings along with the other attachments are fixed in the scope tube.                The one inch scope ring will only be used with one inch scope tube when the 30mm scope ring can only be used with 30mm scope tubes.

Elevation Turret

The elevation turret is slightly similar with elevation turret. It is normally equipped in the scope body and allows you to make vertical adjustment for the reticle. Usually, the elevation and windage turrets come with same types of increment.

Parallax Error Adjustment

Some of the rifle scope comes with a third turret apart from windage and elevation turret. The turret is knownas parallax error adjustment and it is situated in the left side of the windage turret. The parallax adjustment is highly important when you are going to shoot on a long distance. Normally most of the riflescope are zeroed 100 yards but the riflescopes that come with adjustable magnification on a long distance can create parallax error. The parallax error adjustment helps you to remove the error for shooting accuracy.

Objective Lens

The objective lens is one of the most important parts of the riflescope. The work of the objective lens is to gather light to show you a clear view of the target. Objective lenses come in a bigger size when compared to the ocular lens. It uses millimeter for the measurement. The size of the objective lens can be checked from the specification of the rifle scope. We recommend you to go for a large objective lens size as it allow you to see a better picture of the target and it allow you to shoot on a very long range.

Objective Bell

We usually give importance to all other important parts of the scope, but we forget the objective bell. It is a slopped portion between the objective lens and the tube of the scope. You know the role of an objective lens in a scope. This piece of hardware (Objective bell) holds that objective lens in place. The objective bell also helps the objective lens in gathering much light to create a sharp image.

Eye Relief

I know what are you thinking? And I know the eye relief is not the hardware of a scope. But do you know how important it is! The eye relief indicates the distance between your eyes and the eyepiece. It determines how far from the scope, you can see the object.

The scope of having long eye relief is always better for any kind of shooter or hunter. Usually, the average eye relief is not less than 3 inches. The long eye relief also facililates comfortable use of the scope. It also prevents your eyes from the injury that is produced by the backward movement (Recoil) of the rifle.

Frequently Asked Question

✅ What does the inside of a rifle scope look like?

The inside of the rifle scope doesn’t contain anything hazy. Some good quality scopes contain gas, which makes them resistant to water, fog, and others. The inside of the scope looks like the inside of a telescope, mostly.

✅ Is a 3 9×40 scope good?

In my opinion, the scope is definitely good. The highest magnification capacity is 9X, which is powerful enough. And the diameter is wide enough of the objective lens. It is very much appropriate for the game up to 300 yards.

✅ What are the different parts of a rifle scope?

The parts of a rifle scope includes eyepiece, ocular lens, power ring, windage adjustment, elevation adjustment, windage bell, and objective lens.

✅ What does 3x9x40 scope mean?

3-9×40 means the scope can magnify the target three to nine times, and the scope has a 40mm objective lens.

✅ How do you zero a scope?

First of all, mount the scope perfectly on the rifle and stable the rifle. Then set a target and use a laser boresighter to zero the scope. Don’t you understand? Follow this guide.

✅ What is the objective lens on a rifle scope?

The lenses are the most significant parts of a rifle scope. A scope contains two kinds of lenses: ocular and objective lens. The objective lens accepts and transfers light through the tube and helps in making a clear and bright image.


Understanding all the parts of a rifle scope may take much time. And you might not remember all parts individually just after observing for a single time. So, take enough time and learn all the parts individually. Learning about all the parts also eventually helps you become an expert hunter or shooter in the field.

Louis Harry

I love to hunt and shoot and in this course, I can feel the irritation of time-consuming shopping for the scope, especially in online so a good product review can help you to get over this and to provide you the basic knowledge so that you can get along with the dealing. But all the content available in online are not equally effective and helpful. Even most of them are really boring and lack of information or full of wrong information. Read More

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