A clip on thermal scope is the fastest way to hunt at night without buying a second rifle setup, because it clips in front of the day scope you already trust and shoot. You keep your familiar reticle, your saved zero, and your normal cheek weld. When daylight fades, you slide the thermal unit on the rail ahead of your optic, and the same rifle you sighted in for daytime now sees heat in the dark. No re-zeroing the day scope, no relearning your holds. Judged on that one job, adding thermal in front of a scope you already own, ATN's 6th-gen TICO 6 line is where we start people. Both models here clip on and detach in seconds with an included Quick Detach Mount, then double as a handheld thermal monocular when you pop the eyepiece back on. This roundup is organized by how you actually attach and use them, not by a spec sheet alone.
Best for long range and detail — ATN TICO 6 640x512 1-15x: the higher-resolution flagship. A 640x512 sensor and 50 mm lens push detection out to 3500 m and pull far more detail at distance, still clipping on the same way. Best if you take longer shots or want the crispest thermal image in front of your day optic.
Why ATN's 6th-gen TICO 6 works as a clip-on
ATN's 6th-gen TICO 6 works as a clip-on because it was built to sit in front of a day scope rather than replace it. It mounts on the rail ahead of your optic with the included Quick Detach Mount, so you look through the thermal unit and then through your day scope in a straight line, keeping your existing reticle and your saved zero. That means you do not re-sight the rifle to hunt at night, which is the whole point of a clip-on. Both models add a removable eyepiece, so the same unit becomes a handheld thermal monocular for scanning before you commit to a shot. SharpIR AI image enhancement cleans up the picture, Recoil Activated Video captures the shot off recoil, and Hot Point Tracking marks the warmest object with a tap. Built-in Wi-Fi with ATN Connect 6 lets you stream and share, and a Full-HD OLED display keeps the view sharp. Every model below comes from this current 6th-gen line only.
ATN TICO 6 384x288 1-12x - best overall clip-on
The ATN TICO 6 384x288 1-12x is the best overall clip on thermal scope because it does the core job cleanly and adds a second life as a monocular. It clips in front of your day scope with the included Quick Detach Mount, keeps your day reticle and zero, and comes off just as fast when the sun comes up. The 384x288 sensor and 35 mm F/1.0 lens reach 2710 m of detection, which covers the ranges most night hunters actually shoot. At 1.15 lbs it is the lighter of the two, so it does not tip your rifle's balance forward once it's mounted.
Clips on, keeps your zero
The TICO 6 mounts ahead of your day optic and passes the image straight through, so your day scope's reticle stays your aiming point and your existing zero holds. That matters because re-zeroing a rifle in the dark is exactly what you want to avoid; you sight in once for daytime and the clip-on lets you hunt at night with the same holds. The 1x optical design means the thermal unit does not magnify on its own, so whatever your day scope is set to, from a wide 1x up to 12x, is what you get through the glass.
Doubles as a handheld monocular
Pop the removable eyepiece back on and the same unit becomes a handheld thermal monocular for scanning a field before you shoulder the rifle. That is a real advantage on a night hunt: you glass a treeline or a fence line by hand, spot heat, then clip the unit onto the rail and take the shot through your day scope. One purchase covers two jobs, and you are not carrying a separate scanner.
Resolution and NETD you can read
The 384x288 sensor is like a solid standard-definition picture: enough dots on the screen to detect and identify game clearly at typical night ranges, even if it won't stretch as far as a 640. NETD under 18 mK is the thermal sensitivity figure; lower means the unit separates small heat differences, so a coyote reads cleanly against cool ground. SharpIR AI enhancement sharpens the picture further, and the Full-HD OLED display keeps it crisp as it passes into your day scope.
Who it's for: the hunter who wants to add thermal in front of a day scope they already shoot, at practical night ranges, and likes that it doubles as a scanner. Who it's not for: someone who regularly reaches long distances or wants the finest detail at range; step up to the 640 for that.
ATN TICO 6 640x512 1-15x - best for long range and detail
The ATN TICO 6 640x512 1-15x is the pick when you want the same clip-on convenience with more reach and a sharper image. It mounts the same way in front of your day scope with the included Quick Detach Mount and keeps your zero, but the 640x512 sensor and larger 50 mm F/1.0 lens push detection out to 3500 m. That extra range and detail come into play when you shoot open country or want to identify game well before it closes the distance. At 1.24 lbs it is only slightly heavier than the 384.
A higher-resolution sensor for distance
The 640x512 sensor is a clear step up from 384, the way moving from a standard-definition picture to full HD gives you more detail across the frame. More pixels mean you can tell a hog from a stump farther out and hold that detail as your day scope zooms in. Passed through a day optic set as high as 15x, the extra resolution is what keeps the image from getting soft when you reach for distance.
Same clip-on and monocular flexibility
You still get everything that makes the line easy to live with: it clips on in seconds, keeps your day reticle and zero, and converts to a handheld monocular with the removable eyepiece for scanning. Recoil Activated Video captures the shot off recoil so you can review a hit later, and Hot Point Tracking marks the warmest object with a tap. Built-in Wi-Fi and ATN Connect 6 let you stream and share from the field.
Who it's for: the hunter who takes longer shots, works open ground, or simply wants the crispest thermal image in front of a day scope. Who it's not for: someone who only shoots close-in and wants the lightest, most affordable clip-on; the 384 covers that at a lower tier.
How to choose a clip on thermal scope
Choose a clip on thermal scope by starting with how it mounts and holds your zero, then letting sensor and reach sort the rest. The whole value of a clip-on is that it works with the day scope you already own, so the mount, the pass-through image, and the weight up front matter first. After that, match the sensor and detection range to the distances you truly shoot.
- Mount and zero retention — a good clip-on attaches ahead of your day scope and returns to the same spot, so your existing zero holds; both TICO 6 models include a Quick Detach Mount for exactly this.
- Dual clip-on and monocular use — a removable eyepiece lets the same unit scan by hand before you shoulder the rifle, so you buy one tool instead of two.
- Resolution — a 640x512 sensor identifies and holds detail farther than a 384; pick 640 if you reach out, 384 if most shots are at practical night ranges.
- NETD — thermal sensitivity under 18 mK keeps the image high-contrast so warm game separates from cool ground and brush.
- Detection range — be honest about your real distances; detection tells you how far you can spot heat, not identify or ethically shoot it.
- Weight — the clip-on hangs out in front of your optic, so keeping it near a pound helps the rifle stay balanced and quick to handle.
- Battery and connectivity — a single 18650 cell keeps things light and easy to swap, while Wi-Fi and ATN Connect 6 let you stream and record.
How we picked these ATN thermal clip-ons
We judged these against one task: adding thermal in front of a day scope you already shoot. So the mount came first, whether it attaches cleanly ahead of the optic, returns to zero, and detaches fast, followed by how the pass-through image behaves at your day scope's magnification. From there we weighed sensor resolution (640 vs 384), thermal sensitivity (NETD under 18 mK), detection range against realistic night distances, refresh smoothness, the weight sitting out front, and roughly seven to eight hours of runtime on a single 18650 cell. We only looked at ATN's current 6th-gen TICO 6 line, so nothing here is an older or discontinued model. Honest trade-offs: the 640 costs and weighs a touch more for reach many hunters rarely use, while the 384 gives up some long-range detail; and Wi-Fi streaming can shorten battery life. A clip-on is also not the pick for someone who wants a single standalone thermal scope and no day optic at all. This is an in-house comparison of ATN's own range, not an independent lab test, so check the specs against your rifle, your day scope, and your real ranges before you buy.
Frequently Asked Questions
What is a clip on thermal scope?
A clip on thermal scope is a thermal unit that mounts on the rail in front of your existing day scope, so you look through the thermal image and then your day optic in a straight line. It lets you hunt at night with the same rifle, reticle, and zero you use in daylight. The ATN TICO 6 is a clip-on that also converts to a handheld monocular.
Do I have to re-zero my rifle when I use a clip-on?
No, that is the main reason to use a clip-on. Because the TICO 6 mounts ahead of your day scope and passes the image straight through, your day scope's reticle and saved zero stay your aiming point. You sight the rifle in once for daytime, then clip the thermal unit on to hunt at night without re-zeroing.
Can the ATN TICO 6 be used as a standalone thermal monocular?
Yes. Both TICO 6 models have a removable eyepiece, so you can pop it on and use the same unit as a handheld thermal monocular for scanning. That lets you glass a field or treeline by hand, spot heat, then clip the unit onto your rail and shoot through your day scope. One purchase covers scanning and shooting.
Should I get the 384 or the 640 TICO 6?
For most night hunting at practical ranges, the 384x288 model is the lighter, best-overall choice and covers the job well. Step up to the 640x512 if you take longer shots, work open country, or want the sharpest image and the most detail at distance. Think of the 640 as moving from a standard-definition picture to full HD.
How far can the ATN TICO 6 detect heat?
The TICO 6 384x288 detects heat out to about 2710 m, and the 640x512 reaches roughly 3500 m thanks to its larger sensor and 50 mm lens. Keep in mind detection range is how far you can spot a heat signature, not how far you can identify or ethically shoot game, which is always a shorter distance.
Does a clip-on add much weight to my rifle?
The TICO 6 stays light for a clip-on, at 1.15 lbs for the 384 and 1.24 lbs for the 640. Because it hangs out in front of your day scope, keeping the weight near a pound helps your rifle stay balanced and easy to swing while you scan and take shots at night.
Can I record my hunt with the TICO 6?
Yes. The TICO 6 line has Recoil Activated Video that captures the shot off recoil, plus built-in Wi-Fi and ATN Connect 6 so you can stream, share, and manage settings from an app. That makes it easy to review a hit or a miss later, though heavy streaming can shorten your battery life.
If you already have a day scope you trust and just want to see in the dark, a clip-on is the simplest upgrade you can make: mount it in front of your optic, keep your zero, and hunt at night with the same holds you already know. The ATN TICO 6 line does exactly that in two tiers, and each one converts to a handheld monocular so you can scan and shoot with a single tool. Compare both models and their specs on the ATN thermal clip-on collection, then match the sensor and reach to the distances you really hunt. Pick the one that fits your rifle and your ranges, and your daytime setup becomes a night setup in seconds.
Created: August 10, 2026 · 10:05:21 UTC
