ATN Thor 4 640 4-40x Thermal Riflescope Review

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The ATN Thor 4 640 4-40x Thermal Riflescope is the most recent version of the ATN THOR 4 series. This scope helps to avoid the difficulties in hunting.

Due to the features of this Thermal imaging scope, you can quickly shoot your target in day and night time.

Usually, a thermal scope is more useful than the night vision scope for hunting; the thermal sensor helps to improve your hunting in the night time.

This ATN ThOR 4 640 4-40x Thermal Imaging Scope is the combination of the obsidian dual-core processor and the next-generation thermal sensor.

The high-resolution display and the high-quality lens of this scope make this the greatest product in the market. The magnification range of this thermal scope helps to get a clear view of the target in the long distance.

ATN Thor 4 640 4-40x Thermal Riflescope Review

Arctic Silver 5 Thermal Paste


  • Thermal Resolution: 640 x 480
  • Refresh Rate: 60 Hz
  • Eye Relief: 90mm
  • Brightness Setting: 5
  • Field of View: 6 degrees
  • Magnification: 4-40X
  • Detection Range: 3300 m
  • Minimum Focus Distance: 15 m
  • Battery: 18 hours


The Aluminum Alloy is used to design the housing of this rifle scope so that you can get the durable and lightweight construction. The diameter of the main tube is 30 mm.

There are two straight 30 mm Picatinny, and a cantilever weaver ring is provided with this scope to mount this scope with your rifle.

A rotary zoom dial knob is located on the left side of the scope that helps to adjust the zooming range for focusing the target.

Thermal Technology

The Gen 4 Thermal sensor is used in this riflescope; this sensor provides the 640×480 high-resolution view. Due to this high sensitivity sensor, you can get a crisp and clear view of the target.

Using this thermal scope, you can get a clear view of your target in the night time also. This sensor has three optional modes, like the previous version of the ATN Thor 4 series. The color mode provides the thermal image of the target.

The Black Hot Mode shows the target in black color, and the White Hot Mode shows the target in white color. The refreshing range of this sensor is 60 Hz. The spectral of this riflescope is responded between 7 to 14µm.

The Processor

Due to the design and features, so many benefits users are likes this ATN Thor 4 640 4-40x Riflescope.

This thermal rifle scope has the dual-core processor for the computer to automate certain functions; it will help to make your scope work fast and easy. Due to the obsidian IV dual-core processor, this riflescope has some features in computer technology. 


The HD lens is used in this thermal scope; it will help to get a clear view of the target. The magnification range of this scope is 4 to 40x; it is the latest version of this model.

By using this magnification range, you can get a clear view of the target under 3300 yards. The human recognition range of this thermal scope is 1450 yards.

Using this thermal scope, you can get the maximum range of view. It has both digital and manual zooming features; the buttons of this scope help to zoom the target. The maximum range of field of view of this thermal scope is 8.3 x 6.2°.


This ATN Thor 4 640 4-40x Rifle Scope has the 1280×720 HD microdisplay is designed, which shows the high-quality view of the target.

Using this HD display, you can clearly view the captured video and image. By using this microdisplay, you can get a clear view of the target and the surroundings. 


The One Shot Zero and Smart Mil-Dot are the two types of reticles of this ATN Thor 4 640 4-40x. You can choose the types of reticle to shoot the target based on the environment.

There are 5 mil dot ranges available in these Smart Mil-Dot reticles; by using this, you can easily focus on the exact range of the shooting target.

The One Shot Zero reticle is helped for easy targeting without any disturbance. In this reticle, you just simply adjust the reticle for where the bullet wants the hit on the target. This reticle will reduce the time spending for focusing on the target. 

Smart Rangefinder

A laser rangefinder is in-build in this riflescope; due to this feature, you don’t need to carry a piece of extra equipment for the perfect targeting.

The laser rangefinder of this scope helps to focus on the long-distance target; it will automatically send the data to the ballistics calculator and adjust the reticle for the clear objective.

Image and Video

Using this ATN Thor 4 640 4-40x Riflescope, you can capture your hunting experience in the form of image and video.

The captured images are stored in JPEG format, and the videos are stored in the MOV format. A micro SD card is in-built in this riflescope; it will help to store the images and videos. 

Recoil Activated Video

Due to this feature, your friends and colleagues can watch your hunting experience live on their PC or laptop, and also you can save the videos in the micro SD card.

The scope has the Wi-Fi and Bluetooth features so that you can transfer the video from your scope to other devices, and you can also use the USB cable to transfer the data. 

ATN Thor 4 640x480 RAV

Ballistic Calculator

A Ballistic Calculator is also included in this ATN Thor 4 640 Thermal Scope. By using this, you can exactly shoot your target in all critical conditions.

You just enter the data of your surroundings to the ballistic calculator; it will automatically calculate for the performance, so the reticle will automatically focus on the target. 

ATN Thor 4 640x480 Ballistic Calculator 1


The Lithium-ion battery is used as the power source of this riflescope. This is a rechargeable type battery, so you can recharge this battery using a USB cable. Due to this battery, you can continuously use this thermal scope for 16 hours. 

User Interface

The remote controller of this thermal scope helps to access the features. The new tactical buttons are also provided in this scope, using the button, you can feel every click for the control of this thermal scope. If you install the ATN Obsidian app on your smartphone or tablet, you can control this riflescope via Wi-Fi.  

Our Final Words

This ATN Thor 4 640 Thermal Scope helps to make their hunting experience more interesting. Due to the feature of this scope, you can get the best experience in all tactical conditions.

This riflescope is highly recommended for enforcement professions and hunting. The ATN always provides the products at an affordable price; it once more proved that by providing this ATN Thor 4 640 Thermal scope with the advanced feature at an affordable price.

About Annalena Wood

Annalena is carrying her rifle with passion and pride for her love of the outdoors and the experience of hunting. Her most memorable hunting season was back in 2015 when she and her dad were drawn for special elk tags. That allowed them the chance to fill their tags with an actual bull elk rather than a spike. That year both her and her dad came home with their first trophy elks, with hers a 6 by 6 pointer and her dad’s a 6 by 5.