The Best Clip-On Thermal Scopes for 2022 [Complete Reviews]

Written By Jared Whitlock is reader supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

The equipment shares equal importance while hunting because hunting requires a certain amount of skills andresponsibilities. Day and night hunters need advanced technology to work as an additional tool in the field. If you take your target successfully, all your equipment from the rifle to scopes must run together.​

Nowadays hunting is the most popular thing hence the availability of the hunting equipment also increases that can enhance your experience.

Thermal scope contains more advanced features for thermal imaging technology to produce precise output quickly and it provides advanced results compared to previous times.

The clip-on scopes are versatile that provides you the advanced features and accurate outputs. You can use this scope as a dedicated one to expand the thermal imaging capability.

The clip-on scope will increase the level of your hunting game and also it will be suitable for your needs. This scope doesn’t require any small light to run hence you can view your targets at any time if it is day or night without any restrictions.

To choose the best clip-on scope, you have to know the brands, models, and features of the scopes. We’ve looked at some of the best clip-on thermal scopes to help you to make the best choice.

3 Best Clip-On Thermal Scopes

1. Pulser Core FXQ38

Pulsar core is one of the best clip-on thermal scopes and reliable brands available in the market and it is rated based on its quality and features.

It is a compact and lightweight product from the most popular brand which provides a simple solution for night vision by enhancing thermal imaging technology. 

Pulsar comes with the latest features for scopes like high-resolution and the distance capability of 1400 yards which is remarkable.

This is the most versatile scopes and also it is affordable compared to the available products. 

Arctic Silver 5 Thermal Paste
  • Sensor Resolution: 384 x 288
  • Display Resolution: 640 x 480
  • Detection Range: 1475 Yards
  • Dimensions: 7 x 2.6 x 2.5
  • Weight: 16.2 ounces
  • Frame Rate: 50HZ
  • BatteryLife: 4 hours

It is designed with double functionality such as monocular and thermal scope for your rifle that helps you to scan your surroundings.

Pulsar core has a quality interchangeable eyepiece that makes your hunting professional and it allows you to identify and lock your targets. 

The body of the Pulsar is compact and it reduces the disturbance while balancing your rifle.

Both the body and battery are water-proof and weather-proof hence you can hunt even in the rain and smog. 

The screen is designed with a reliable green color that decreases strain on your eyes hence you can use it for a long period.

You can recharge the external battery using the USB adaptor and also you can charge it using the wall socket or any power bank.


  • High-resolution display
  • Versatile
  • Water-proof


  • Fixed lenses


Pulsar core is a combination of thermal imaging monocular, a front attachment forday riflescope and an observation tool.

It comes with the replaceable eyepieces so you can easily transform it in few seconds. 

The core contains three operating modes that are designed to produce quality images with precise viewing options.

The modes are Rocks, Forest, and Identification. 

Pulsar provides three calibration modes such as Silent Manual(M), Automatic(A), Semi-Automatic(H).

“A” mode indicates that the calibration without user access.

In “H” mode you can calibrate based on the image quality by pressing the ‘cal’ button.

In “M” mode, the manual calibration is performed when the lens cap is closed. The “M” is mostly suggested for hunting due to silent performance. 

Pulsar scopes can able to work with all the regular day scopes for needs.

If you are a beginner in night hunting or an experimenter with this digital imagery, the Pulsar core is the perfect clip-on thermal scope for you.

2. FLIR Apollo-Pro LR 640

FLIR is a very popular and favorite brand for many hunters to choose for night vision.

Designed for long-range detection and commitment.

It provides high-performance thermal imaging to any standard day scope. 

You can connect this with your mobile app to improve performance.

FLIR Apollo Pro takes the top place inthe best long-range clip-on scope.

It’s unique to see a thermal scope with excellence in the performance as well as the designation. 

Arctic Silver 5 Thermal Paste
  • Sensor Resolution: 640 x 512
  • Display Resolution: 800 x 600
  • Field of View: 6.2°
  • Dimensions: 11.3 x 3.9 x 3.5
  • Frame Rate: 60HZ
  • BatteryLife: 7 hours

FLIR Apollo scope is synchronized with valuable elements such as compass and live weather guide to sendtheduration of hunting to you.

Apollo Pro provides instantaccuracy by quickly mounting on the front of day optics using the existing ballistic reticle. 

FLIR Apollo provides free mobile applications for Android and iOS that allows you to improve overall experiences while hunting.

These apps can help you to lock your position, and it allows you to change the direction and Geo coordinates of the target using the terrain map and satellite map in the mobile device.

The mobile applications allow you to choose a tab in the PRO Series system level remote operation to change the functions.

You can use a wireless remote via smartphones with the smart graphics display to do this.

For user’s convenience we’d like to inform that, this particular product is unavailable right now, if it comes back to the market intimations will be given shortly for the customers by us.


  • Durable
  • Affordable
  • Long battery life


  • Lack of water-proof

For android users, there is an advantage of importing Kestrel 4500 series weather station information to the mobile device.

You can use these applications easily via Google Play and App Store without any fee. 

Apollo Pro thermal scopes provide you an unbelievable and precise field of view at night time.

It provides great output not only in the normal condition but also in the bad weather conditions like rainfall, smog, and other unusual situations. 

Unlike the other scopes, FLIR Apollo Pro has the capacity to record videos while in the hunting field.

An SD card is inserted in the tool that stores the captured images hence you can watch that later.  

This scope has many palettes(Black, White, Fusion, Rain, Sepia, Rainbow) to see the images.

If you need a clip-on scope with great image quality, high-quality display and accurate ranges, this is a valuable investment for you.


ATN Thor 4 is one of the best thermal scopes with great features at an affordable price.

It comes with an ultra-sensitive next-generation sensor that has an improved resolution and higher sensitivity to capture the images clearly at long-distances in the complete darkness. 

It comes with the ballistic calculator to make your hunt responsible and helps you to focus on your targets from long ranges.

Ballistic measures angle, temperature, humidity, and multiple weapon profiles to help you to make a perfect shot every time. 

Arctic Silver 5 Thermal Paste
  • Sensor Resolution: 384 x 288
  • Display Resolution: 1280 x 720
  • Detection Range: 750 m
  • Dimensions: 13.1 x 3 x 3
  • Frame Rate: 60HZ
  • BatteryLife: 18+ hours

Thor comes with the 1280×720 HD display screen that helps you to see your target clearly on long-distance.

The scope provides clear images even if you zoom in or far away from the object and the images come out clear even at dark places. 

Dual stream and video recording features allow you to record your hunting and streams on your phone.

It includes the 64GB SD card hence you can store your videos and images in this external memory and view later. 

Thor 4 thermal scope allows you to stream the videos on both iOS and Android devices hence it is versatile and suitable for all users.

One of the greatest features of this scope is theObsidian App that is easy to set and access hence you can adjust the settings of the scope directly from your mobile.


  • High accuracy
  • Durable battery
  • Attractive design


  • Lacks some digital features

The Recoil Activated Video helps you to record your video without needing your access hence you can relax and focus on your hunting game.

It records before and after your hunting by pressing the button.

It contains the Zoom wheel to the left side of the scope hence you can operate that easily. 

ATN Thor 4 is the solid and impressive construction, it is lightweight and mounting it with your rifle will be very simple.

The value of scope is determined based on the quality of images that produce therefore it comes with the 640 x 480 high thermal sensor resolution. 

You can detect the targets up to 1050 yards using this scope but if you want to know the nature of the target, you need to be within 330 yards. Moreover, you can capture the picture of your targets within the range of 530 yards. 

Thor 4 is suitable for both the medium and short-range viewing; therefore, you can choose different lenses based on the distancesfrom whereyou want to shoot.  

Every hunter wants the scope to view their targets closely from the long-distances and Thor 4 done this easily and effortlessly.

If you are a beginner in hunting, this thermal scope is designed for you tohunt easily.

Check out the complete review of ATN Thor 4 here...

Factors to Consider

When you’re looking for a clip-on scope, you have to consider important factors about the scope to choose the best one for your needs. 

Before purchasing a scope, you have to check if it is suitable for your rifles to mount. The incompatible scopes require additional adaptors to clip on your rifles. Other critical things to consider are the size of the device and lenses, weight, and battery life according to your personal preference.

The high-resolution display screen is important if you want to use the day scope with thermal clip-on. Higher zooming capacity of the day scope can display the blurred images on the screen that makes you harder to view your target. 

If you want to use the day scope and thermal scope concurrently, you have to off the day scope’s zero. Remember that you have to re-zero the scope before every use. This is important to increase the precision of your aiming. 

If you want to capture the moving objects, consider the models that have high fresh rates.


The thermal scope is lightweight and convenient to use hence it is suitable for the hunters who spend a long time in the field.

In this, there is no need to change the zero of your day scope when you use both day and night hunting. Most of the clip-on scopes can able to hold the day scope’s zero.


Using a clip-on thermal scope, no need to worry about the handling of your rifle and monocular simultaneously to view or track your target. You can just relax and focus on your target instead of handling this equipment.

The scopes provide additional safety to the hunter in the field. There are lots of dangerous elements like darkness, unknown terrain, fog, etc can affect while hunting hence thermal scopes protect you from these. 

The clip-on scopes provide a stable and quality night vision that helps you to reduce the risk of handling the critical elements.

The best feature of clip-on thermal scopes is that it acts as the monoculars while hunting hence this dual feature makes thermal imaging technology more versatile.

Final Words

As we mentioned in this review, you have to consider and study the three scopes. Compare your preferred scope with our clip-on scopes according to the features, quality, and budget then purchase the best one based on your needs.

If you are searching for the best affordable clip-on scope, Pulsar is the perfect choice for you to deliver the great performance. Apollo Pro is the best beginner-friendly scope and suitable for long-range detection. ATN Thor 4 is the best clip-on scope that withstands to protect you in the hardest situations. 

We hope this review will help you to invest in the best clip-on thermal scope for your day and night hunting.

About Jared Whitlock

Jared hold a Bachelors in Engineering from the University of Louisiana and currently lives in Utah. He has been hunting all across the United States for over 20 years and always makes sure he has the latest technology and gear to keep his hunting at a top level.

Leave a Comment