Best Thermal Scopes for AR-15 in 2026

The AR-15 is arguably the most practical rifle type to use for thermal hunting due to its lightweight nature, modularity, ease of attaching optics, and widespread usage among hunters of hogs, coyotes, and predators during the nighttime.

But unlike buying thermal scopes in general, buying thermal scopes for AR-15 requires certain considerations. A huge 50mm thermal scope may offer impressive specs, but it will make an AR rifle front heavy. A scope with maximum base magnification will be great for hunting open areas, but it may limit vision around feeders. A small thermal scope will be more portable, but it may be unable to deliver sufficient details for distant coyote shots.

When looking for the best thermal scope for AR-15, hunters should pay attention to such key aspects as sensor resolution, base magnification, field of view, weight, mount quality, battery system, eye relief, and actual application scenarios.

In most cases, the ideal starting point for choosing thermal scopes for AR-15 would be 384 sensor and a 25mm or 35mm lens. If hunters want to deal with longer coyote shots, 640 thermal scope will perform better. At the same time, hunters rarely need extra bulky and heavy scopes for hunting coyotes or other predators with ARs.

What to Look for When Buying AR-15 Thermal Scopes?

The thermal scope should serve its purpose.

First, hunters should make sure that the scope mounts correctly. AR-15s feature flat-top Picatinny rail and it is recommended to purchase a thermal scope that has a reliable rail mounting system or is compatible with good aftermarket mounts. Quick detach mounts can be helpful if the AR will be used in combination with other optics.

Second, the thermal scope should not affect rifle performance and balance too much. A heavy scope will make hunting with an AR more difficult and slow. Such factors matter when the hunter walks across fields, calls coyotes, and moves between hunting locations and stands.

Third, the base magnification should be adequate for particular purposes. Lower base magnification will be easier for close hog shots and scanning. Higher base magnification will be helpful for long-distance shots, but it will also limit the viewing area.

Fourth, hunters should pay attention to the battery life because ARs typically spend many hours on predator hunting in the nighttime mode.

Finally, controls should be convenient when using a thermal scope in the field. All features including buttons, menus, zeroing profile, recording, standby mode, and various reticles are important to use the scope at night.

Best Overall AR-15 Thermal Scope: AGM RattlerV2 35-384

Among all thermal scopes for an AR-15 rifle, the AGM RattlerV2 35-384 is one of the best choices to make because it provides a nice balance of various parameters.

AGM claims that its thermal scope RattlerV2 35-384 features such main specifications as 384×288 thermal sensor, 35mm germanium lens, 3x base magnification, 3x to 24x digital zoom, 50 Hz refresh rate, <20 mK sensitivity, and 1,800 m/yd detection range. The scope also has a rechargeable battery system with maximum 11-hour runtime and custom ADM quick detach mount.

These specs are very helpful for a thermal scope for AR-15 because the 384 sensor and 35mm lens keep the setup more practical than many larger premium thermals, while still giving enough reach for mixed hog, predator, and field hunting. At the same time, this scope isn’t as big as many premium scopes, so it is more practical to use with an AR.

For an AR-15 hunter, such mounts as QD ones are also great since hunters frequently switch between day and night optic setups.

Best for: hunters who want one thermal scope for all hunting with hogs, coyotes, and predators.

Main tradeoff: even with 35mm lens, this is a 384-core thermal scope that will not beat a good 640 thermal scope in terms of long-distance performance.

Best Budget AR-15 Thermal Scope: Sightmark Wraith Mini 2-16×35 Thermal

The Sightmark Wraith Mini Thermal 2-16×35 could be considered as a decent affordable thermal scope for an AR-15.

According to Sightmark, the Wraith Mini Thermal comes with 384×288 thermal sensor, 35mm lens, 2x base magnification, 1x-8x digital magnification, 13° field of view, 1024×768 OLED display, up to 1,400 yards detection range, five color palettes, ten reticles, nine reticle colors, five weapon profiles, and video recording with audio function.

The base magnification 2x is quite reasonable for AR-15 rifles because it allows to observe wider image compared to 3x and 4x lenses, which can be helpful when tracking moving animals in the field. The 2x lens is also great for hogs and other predators.

One of the downsides of this scope could be power consumption because Sightmark specifies that the battery type used is CR123A. Besides, it can also be powered externally through USB-C.

Best for: AR-15 hunters who prefer a compact thermal scope with low base magnification for medium-range hunting.

Main tradeoff: limited battery time, which should be planned beforehand.

Best Premium AR-15 Thermal Scope: Pulsar Thermion 2 LRF XG50

For a serious thermal hunting on coyotes or for any other reason, the Pulsar Thermion 2 LRF XG50 is worth considering as one of the best options for AR-15.

According to Pulsar, the Thermion 2 LRF XG50 has 640×480 thermal core, 12-micron pixel pitch, 50mm F/1.0 objective, 3x to 24x magnification, 50Hz refresh rate, 1024×768 AMOLED display, 2,300 meters detection range, and an integrated laser rangefinder up to 800 meters. The scope has 30mm tube diameter which allows using regular 30mm rings for mounting.

In terms of performance, this scope suits perfectly for those hunters who want to track their targets in AR-15, especially when hunting for long-distance coyotes or shooting on open fields. 640 sensor will provide more details compared to other mid-level 384 sensors, and 50mm lens will also increase reach.

One additional useful parameter of this model is built-in laser rangefinder. Judging distance through a thermal image can be difficult at night, and the rangefinder helps with that.

The downside is related to weight and price. As specified in the manual by Pulsar, the Thermion 2 weighs 0.97 kg/34.22 oz without battery pack. This is more than many other 384 thermal scopes.

Best for: AR-15 hunters dealing with serious predators and requiring premium thermal scope performance.

Main tradeoff: higher price and weight than other compact thermal scopes for hunting.

Best AR-15 Thermal Scope with the Most Features: ATN ThOR 5 640 2-16x

One of the most advanced AR-15 thermal scopes available on the market is ThOR 5 640 2-16x provided by ATN.

ATN mentions that the scope features a 640×480 sensor with 60 fps, 12-micron thermal core, 2x to 16x magnification, 17.6° x 13.2° field of view, 1024×768 OLED display, ballistic calculator, recording videos, Wi-Fi, Bluetooth, recoil activated video recording, various reticles, USB-C connection, 10-hour battery life, 30mm HP QDM mount, up to 2,700-yard detection range, and weighs 0.85 kg / 1.88 lb.

The base magnification of 2x is another factor making the scope useful for AR-15 rifles. It provides hunters with wider images than long-range 3x-4x scopes allowing to scan the terrain effectively. The 640 thermal core ensures great performance compared to other scopes with smaller sensors.

The most obvious downside of this scope is that hunters will need to deal with a lot of features and menus while hunting because it offers many extras.

Best for: AR-15 hunters interested in recording, ballistics calculation, reticles, etc.

Main tradeoff: too many options, menus, and additional electronics that need to be configured.

Best AR-15 Thermal Scope: Armasight Contractor 320 3-12×25

If hunters want a rugged scope, they should consider buying Armasight Contractor 320 3-12×25 model.

According to Armasight, the scope comes with 320×240 12-micron thermal core, 25mm F/1.0 lens, 3.2x base magnification, 1x-2x-4x digital zoom, 60 Hz refresh rate, NETD <40 mK, 1024×768 AMOLED display, 8.8° x 6.6° field of view, IP67 environmental class, ability to use up to .50 caliber rifle, standard Picatinny mounting system, USB-C connectivity interface, and up to 4 hours of operation time at 20°C temperature with CR123A batteries.

This scope might suit hunters who need a rugged compact thermal scope and aren’t interested in premium features and high-resolution performance of modern thermal scopes.

The downsides of this thermal scope include relatively low resolution and lower-than-average battery life when compared to most current scopes.

Best for: hunters who prefer rugged scopes with reliable performance over premium models with advanced functions.

Main tradeoff: 320 resolution and relatively short battery lifetime.

Best Compact Predator Scope: Bering Optics Super Hogster R 2.9-11.6×35

Another great option for predator hunting is Bering Optics Super Hogster R 2.9-11.6×35 scope.

B&H lists the Super Hogster R model as having 384×288 vanadium oxide thermal core, 35mm optics, 2.9x optical magnification, 4x digital magnification, 50Hz refresh rate, 1280×960 LCOS display, and quick release mount. Additional Bering’s specifications state that the scope features 35mm F/1.1 objective and 7.5° x 5.7° angular field of view.

A compact thermal scope with 2.9x base magnification could be helpful for many AR-15 hunters when dealing with predator hunting. However, it could be more suitable for AR-15 as a dedicated night rifle for hunting predators than for general-purpose rifle used throughout a day.

Best for: AR-15 hunters who prefer compact thermal scopes for predator and hog hunting.

Main tradeoff: narrow field of view compared to some 2x scopes and it is not 640 scope.

Best AR-15 Magnification Range for Night-Time Predator Hunting

When selecting a suitable magnification level for thermal scope attached to an AR-15 rifle, hunters usually choose 2x-3x base magnification levels.

A 2x thermal scope is optimal for AR-15 when used in brushland or in proximity to feeders because it allows observing a wider image of the area. The disadvantage of 2x thermal scope is that it is unable to provide the same distance of reach.

3x thermal scopes will be more effective for mixed hog and predator hunting on an AR-15 as well as when hunting at medium or long distances.

4x and higher magnification scopes are useful for hunting on open fields or in large areas but can be challenging when animals appear at 60 yards instead of 200 yards. Digital magnification shouldn’t be viewed as a tool to replace appropriate base magnification.

Best magnification range for AR-15 hog hunting: 1.5x-3x.

Best magnification range for AR-15 coyote hunting: 2.5x-4x.

Weight and Mounting Quality Matters More Than Expected

When mounting a thermal scope on an AR-15, hunters should pay attention to weight-related issues.

Since the AR-15 is known as a versatile platform that hunters love for its modularity and lightweight nature, any heavy component attached to it will reduce its efficiency. Hunters who plan to use scopes for long hunting trips may find lighter scopes easier to handle compared to heavier models.

Moreover, hunters should take into account the weight of all other components such as battery packs, suppressors, rifle lights, and slings. For example, a heavy suppressor can add significant weight and make a thermal scope mounted on an AR-15 too heavy.

Thus, hunters should think about whether their hunting trip requires a lighter scope or if they will operate an AR-15 from a tripod or in static hunting.

Mounting Thermal Scopes on AR-15 Rifles

Quality mounts are crucial for successful AR-15 hunting.

As it was mentioned above, AR-15s utilize flat top rails and thus a thermal scope for AR-15 should either feature a quality rail mounting system or be compatible with a suitable quality mount.

Many scopes are delivered with QD mounts for quick mounting, which is convenient for switching to other optics.

As we can see, AGM RattlerV2 35-384 comes with QD mount developed by ADM. Meanwhile, Pulsar recommends mounting its Thermion 2 LRF XG50 with standard 30mm rings due to its 30mm tube. Similarly, ATN ThOR 5 640 2-16x comes with 30mm HP QDM mount.

It is also important to verify zero after installation because not every mounting system brings the scope to zero automatically.

AR-15 Eye Relief and Ergonomics

Eye relief is essential for a thermal scope mounted on an AR-15.

While some thermal scopes have traditional scope design, others represent box-shaped optical devices. Hunters need to make sure the scope doesn’t interfere with operating the rifle.

If a thermal scope on AR-15 is installed too far backwards, it will block access to the rifle’s charging handle. If a thermal scope is installed too far forward, it will create discomfort to hunters’ heads.

To make sure everything is set right, hunters need to check whether a thermal scope is comfortable to use when shooting from various positions. Even if the thermal scope feels great on the bench, it may cause discomfort during night hunting trips.

384 vs 640 Core on AR-15

A thermal scope with 384 core is usually good enough for AR-15 rifle.

If hunters just need a thermal scope for hogs, farm protection, or medium-distance predator hunting, a quality 384 scope should suffice. In most cases, 384 scope will be sufficient for hunting pigs and other hogs that are usually larger than coyotes.

640 core is required for long-distance predator hunting on an AR-15. 640 thermal cores allow delivering much greater number of thermal details than 384 cores do, which makes them better suited for hunting coyotes and other predators.

Ultimately, hunters need to understand what core to opt for depending on the distance. If the shot is fired at a distance below 150 yards, 384 is sufficient. Otherwise, 640 is a better solution. The same logic is covered in more detail in our 384 vs 640 thermal scope guide.

Best AR-15 Thermal Scope for Hog Hunting

When talking about hunting hogs, the best thermal scope for AR-15 will be determined according to such criteria as field of view, weight, battery capacity, and usability.

In terms of field performance, AGM RattlerV2 35-384 proves itself as one of the best thermal scopes for hogs hunting. Meanwhile, Sightmark Wraith Mini Thermal is another good thermal scope for hogs. Bering Optics Super Hogster R will also suit this type of hunting well.

As we can see, in case of hogs, 384 resolution is not a drawback but a good parameter. For a more focused buying guide, see our article on best thermal scopes for hog hunting.

Best AR-15 Thermal Scope for Coyote Hunting

When considering thermal scopes for AR-15 hunting coyotes, resolution and lens are the most important criteria.

Since coyotes are smaller and faster than pigs, hunters need to focus on more detailed image when dealing with them. Coyotes usually appear further from the hunters than pigs and thus a good long-distance thermal scope will be useful.

Pulsar Thermion 2 LRF XG50 could be viewed as the best thermal scope in this category due to high-performance thermal core and long distance. ATN ThOR 5 640 2-16x is a second good option thanks to the similar resolution and digital magnification. AGM RattlerV2 35-384 will be good if 640 core scope cannot be purchased for some reasons.

A hunter’s decision regarding a lens should be based on particular terrain. If it is complex terrain, 35mm lens will be preferable. Otherwise, 50mm lens is better. More details are available in our coyote hunting thermal scope guide.

Best AR-15 Thermal Scope for Beginners

Novices who purchase thermal scopes for AR-15 tend to make the wrong assumptions when choosing a scope.

Usually beginners don’t think about how important it is for a scope to have appropriate magnification, weight, and battery. Thus, novices should think twice before purchasing a scope and remember that a high magnification isn’t always beneficial.

The best thermal scopes for novices should be simple, not too heavy, easy to mount, and comfortable for hunting on medium distances.

For novice hunters, AGM RattlerV2 35-384 and Sightmark Wraith Mini Thermal 2-16×35 would be decent starter scopes. A more expensive 640 thermal scope could be considered as long as it’s clear whether a hunter deals with long or short-distance hunting.

Common Mistakes When Buying a Thermal Scope for AR-15

The first mistake when choosing thermal scopes for AR-15 is overestimating importance of base magnification.

Base magnification determines reach, but it also affects field of view, so high magnification is good only for shooting at distant targets. High magnification can reduce a hunter’s effectiveness when working with short-distance predators.

The second mistake is neglecting weight when choosing a thermal scope.

A heavyweight thermal scope may turn an AR-15 into heavy and cumbersome gun making it impossible to hunt efficiently.

The third mistake is forgetting about importance of battery capacity for thermal scopes for AR-15.

Despite good image quality, any thermal scope becomes useless once its battery dies. Hunters should check the listed runtime, battery type, spare battery availability, external power support, and how cold weather can reduce real battery performance.

The fourth mistake is buying a long-range optic for close-range terrain.

A 50mm thermal scope may be great in open fields, but it may feel too narrow around feeders, brush, and creek bottoms. Hunters should match the lens size to terrain and expected distance instead of buying the largest lens available.

The fifth mistake is assuming that every quick detach mount returns to zero perfectly.

Quick detach mounts are useful, but hunters should still verify point of impact after mounting changes. A thermal scope on an AR-15 is only useful if it keeps zero and remains repeatable.

Final Verdict

The best thermal scope for most AR-15 hunters is AGM RattlerV2 35-384 because it combines 384 resolution, 35mm lens, 3x base magnification, good battery runtime, QD mount, and practical field performance.

The best value option is Sightmark Wraith Mini 2-16×35 Thermal because it gives hunters compact 384 thermal performance with 2x base magnification, wide field of view, and useful recording features.

The best premium option is Pulsar Thermion 2 LRF XG50 because it offers 640 resolution, 50mm lens, integrated rangefinding, strong detection range, and traditional 30mm mounting.

The best smart-feature option is ATN ThOR 5 640 2-16x because it combines 640 resolution, 60 fps platform, recording, ballistic tools, 2x base magnification, and 10-hour listed battery life.

Armasight Contractor 320 3-12×25 is a rugged compact option, while Bering Optics Super Hogster R remains a strong compact predator and hog scope.

For AR-15, hunters should not buy a thermal scope based on detection range alone. They should choose the scope according to balance, field of view, base magnification, mount quality, battery life, and real hunting distance.