Thermal Scopes

Thermal rifle scopes detect heat signatures rather than visible light — giving you the ability to see game, predators, and hogs in total darkness, heavy fog, rain, and through vegetation that would defeat traditional optics or even night vision. Once a military-exclusive technology, thermal scopes have become accessible to hunters and property owners, with quality units starting under $2,000. Impact Guns stocks 350 thermal products from AGM, Pulsar, iRay, and ATN. For light-amplification technology that requires some ambient light but shows more environmental detail, see our night vision page.

Read our full Thermal Scopes Buying Guide ↓

Thermal vs. Night Vision: Which Technology Do You Need?

This is the most important decision in the category. Thermal imaging detects heat radiation emitted by all objects — it requires zero ambient light, works in complete darkness, through fog, smoke, and light brush, and instantly reveals warm-bodied animals against a cool background. A deer or hog stands out as a bright white or black shape regardless of lighting conditions. Night vision amplifies existing light — it requires moonlight, starlight, or an IR illuminator to function, and produces the characteristic green-tinted image that shows terrain detail, structures, and non-heat-emitting objects more clearly than thermal. For hunting warm-blooded game at night, thermal wins decisively. For navigation, identifying non-warm objects, or lower budget entry points, night vision has advantages. Many serious night hunters own both.

Thermal Scope Specifications: Resolution, Refresh Rate & Detection Range

Three specs determine real-world performance. Sensor resolution (320×240, 384×288, or 640×480 pixels) determines how clearly you can identify targets at distance — higher resolution lets you distinguish a coyote from a dog at 300 yards. Refresh rate (25Hz or 50Hz) affects how smoothly moving targets render — 50Hz is worth prioritizing for any shooting application where a running animal is the likely target. Detection range is the distance at which the sensor can detect a human-sized heat signature — quality scopes reach 1,000–2,000+ meters. For most hog and predator hunting within 300 yards, a mid-tier 384×288 scope at 50Hz is entirely adequate and saves significant cost vs. premium 640 units.

Best Thermal Scope Brands: AGM, Pulsar & iRay

AGM Global Vision produces thermal scopes at accessible price points that have become the standard entry-level choice for hog hunters. Their Rattler and Asp series offer 384×288 resolution at prices well under competing brands at the same spec level — a strong first thermal purchase. Pulsar is the premium hunting thermal brand — their Thermion and Trail series deliver 640×480 resolution, 50Hz refresh, and Stream Vision app connectivity for real-time video to a smartphone. iRay offers competitive mid-range options with excellent build quality. For a first thermal scope, AGM delivers the best value. For a dedicated high-use system where image quality matters at distance, Pulsar justifies the premium.

Thermal Scopes for Hog Hunting: The Primary Use Case

Feral hog hunting is the dominant civilian thermal scope application — hogs are nocturnal, reproduce prolifically, and are legal to take at night in most states. A thermal scope allows positive identification of hogs vs. other animals, precise shot placement in complete darkness, and recovery tracking of hit animals. The typical hog hunting thermal setup pairs a rifle chambered in 5.56, .300 Blackout, or .308 Win with a mid-tier thermal scope capable of identifying hogs to 200 yards. Suppressed builds are popular for hog hunting — since January 1, 2026, the NFA $200 tax stamp has been eliminated, making suppressed thermal builds significantly more accessible. See our suppressors page for compatible options.