A thermal clip on scope lets you keep the day optic you already trust and add thermal in front of it, so you do not re-zero or learn a new reticle. It mounts ahead of your existing scope, and your normal crosshair does the aiming while the clip-on feeds it a heat image. This roundup ranks the two current ATN TICO 6 models by how they fit different setups — from a compact, do-everything unit to a long-range, high-resolution build — so you can match one to the rifle you already run.
The best thermal clip on scope in the current lineup is the ATN TICO 6 384x288 1-12x for most hunters. It mounts ahead of your day scope with no re-zero, converts to a handheld monocular in seconds, detects heat to 2710 m, and weighs just over a pound — the most versatile clip-on ATN builds.
Quick answerBest overall / most versatile: ATN TICO 6 384x288 1-12x — light, dual clip-on and monocular use, no re-zero.
Best for long range: ATN TICO 6 640x512 1-15x — higher resolution and 3500 m detection for reaching out.
Best value: ATN TICO 6 384x288 1-12x — the mid-tier price with the full clip-on feature set.
Why ATN's 6th-gen TICO 6 clip-on works so well
ATN's 6th-generation TICO 6 line matters because it drops thermal onto a rifle without disturbing what already works. It mounts in front of your day scope with an included Quick Detach Mount, so your existing zero and reticle stay exactly as they are — the clip-on simply hands your scope a thermal picture. Both models use a sensor rated at 18 mK; NETD in millikelvin is the smallest temperature difference the sensor can resolve, and lower means a cleaner image. A removable eyepiece even converts the unit into a handheld monocular for scanning, so one device pulls double duty.
ATN TICO 6 384x288 1-12x — best overall clip-on
Mount it, and your zero stays put
The ATN TICO 6 384x288 1-12x is the most versatile clip-on ATN makes. It clamps ahead of your day scope with the included Quick Detach Mount and requires no re-zero, so the reticle you already know keeps doing the aiming. Pull the eyepiece back on and it becomes a handheld thermal monocular for scanning before you ever raise the rifle. At just 1.15 lbs it barely changes the balance of your setup, and detection reaches 2710 m — far past normal shot distance.
Who it's for and who it's not
It's for the hunter who wants to add thermal to a rifle already set up for daytime and keep one light, dual-purpose device. It is not the pick if you need to identify small targets at very long range, where the 640 model's extra resolution pulls ahead.
ATN TICO 6 640x512 1-15x — best for long range
More pixels, more reach
The ATN TICO 6 640x512 1-15x is the flagship clip-on, built for reaching out. Its 640x512 sensor holds four times the pixels of a 384 detector — the jump from standard definition to HD — so a target far downrange still resolves into something you can identify through your day scope. The 50 mm lens pushes detection to 3500 m, and it keeps the same clip-on plus monocular flexibility, just at a higher tier.
Who it's for and who it's not
It's for the hunter who shoots long and wants the sharpest distant thermal image feeding the day optic. It's not the value choice — it's the flagship tier and a touch heavier, so for close and mid-range work the 384 does the job for less.
How a clip-on differs from a dedicated thermal scope
A thermal clip on scope and a standalone thermal scope solve the same problem in very different ways, and knowing which suits you saves both money and frustration. A dedicated thermal scope replaces your day optic entirely — it has its own reticle, its own zero, and it lives on the rifle whether it is day or night. A clip-on, by contrast, keeps your existing day scope in place and mounts in front of it, feeding a thermal image through to the reticle you already know. You aim with your familiar crosshair, and the clip-on simply changes what that crosshair is looking at.
The practical upshot is flexibility. With a clip-on like the TICO 6 you own one rifle that is a normal daytime gun and, in seconds, a thermal night gun — no second rifle, no swapping optics, no learning a new reticle. You also keep any investment you have already made in a quality day scope. The trade-off is that a clip-on adds length and a little weight out front, and its performance depends partly on the day scope behind it. For hunters who already have a rifle set up the way they like and only need thermal some of the time, that trade is usually well worth it.
Using the TICO 6 as a monocular
One of the most useful things about the TICO 6 is that it is really two tools in one, because the eyepiece removes to turn the clip-on into a handheld thermal monocular. Before you ever raise the rifle, you can hold the TICO 6 up to your eye and scan a field, a treeline, or a fence row for heat. That lets you locate an animal, judge whether it is worth stalking, and plan your approach — all without shouldering the gun and swinging a muzzle around to look. It is a safer, faster, more deliberate way to hunt, and it means you often do not need to carry a separate scanning device at all.
When you find something worth pursuing, you snap the eyepiece back off, clip the unit onto the rail ahead of your day scope, and you are ready to shoot with your normal zero intact. This scan-then-clip workflow is where a dual-mode clip-on really shines: the same device that found the animal is the one that helps you take the shot, and you never lose the picture in the handoff. For a hunter covering ground on foot, that versatility can matter as much as raw image quality.
Getting the most from your day scope behind the clip-on
Because a clip-on works through your existing day optic, the setup of that day scope affects how well the thermal image comes through. A day scope set to a modest magnification generally pairs best, giving you a clear, bright thermal picture with a usable field of view; cranking the day scope to very high power can dim and narrow the image. It also helps to keep the clip-on and the day scope on the same optical axis, which a quality rail and the TICO 6's included Quick Detach Mount are designed to maintain. Take a little time to find the day-scope magnification that gives the cleanest picture through the clip-on, and note it, so you can dial straight to it in the field.
How to choose a thermal clip on scope
Choose based on the ranges you shoot and how much you value keeping one lightweight, do-everything unit, because both TICO 6 models mount the same way and leave your zero alone.
- No re-zero is the point — both mount ahead of your day scope and let your existing reticle aim, so your familiar setup stays intact.
- Resolution for distance — the 640 model resolves distant targets better; the 384 is plenty at normal ranges.
- Weight and versatility — the 384 is lighter and both convert to a handheld monocular for scanning.
- Detection range — 2710 m on the 384 and 3500 m on the 640; you rarely need more than the 384 offers for hunting.
How we picked these ATN thermal clip-ons
We compared the two TICO 6 models by how well each adds thermal to an existing day setup without disruption, weighing sensor resolution, NETD sensitivity, detection range, refresh rate, weight, and battery against real clip-on use. Only the current 6th-gen line was considered. The honest trade-off is that the 640 model reaches farther and resolves more detail but costs more and weighs a little more, while the 384 is lighter, cheaper, and covers most hunting. Neither is ideal for someone who wants a dedicated standalone scope rather than a clip-on. This is an in-house comparison of ATN's own range, not an independent lab test, so match the resolution and range to your rifle and your shots.
Frequently Asked Questions
Do I need to re-zero when I add a thermal clip-on?
No. The TICO 6 mounts ahead of your day scope with the included Quick Detach Mount, and your existing scope keeps doing the aiming. Your zero and reticle stay exactly as they were, which is the main appeal of a clip-on.
Can a thermal clip-on also be used as a monocular?
Yes. Both TICO 6 models have a removable eyepiece that converts the unit into a handheld thermal monocular in seconds, so you can scan for heat before mounting it back on the rifle.
Which TICO 6 is best for long range?
The TICO 6 640x512 1-15x. Its 640 sensor and 3500 m detection resolve distant targets more clearly through your day scope, making it the pick when you shoot at longer distances.
Does a clip-on hurt my day scope's accuracy?
A properly mounted clip-on works with your existing zero, so accuracy stays with your day scope. Using a solid mount and returning the clip-on to the same position each time keeps point of impact consistent.
How heavy is a TICO 6 clip-on on the rifle?
The 384 model is about 1.15 lbs and the 640 about 1.24 lbs, so both add modest weight ahead of your scope. The lighter 384 barely changes how the rifle handles.
What resolution do I need in a thermal clip-on?
For most hunting, the 384x288 sensor is enough to spot and confirm targets at normal ranges. Step to the 640x512 model only if you regularly identify small targets far downrange, where the extra pixels help.
If you already have a day scope you trust, a TICO 6 clip-on adds thermal without touching your zero and doubles as a scanning monocular. Start with the versatile 384 for most hunting, or step up to the 640 when you shoot long. Compare both models, read the setup details, and check current pricing on the ATN thermal clip-on collection. Pick the resolution that matches your ranges and you keep everything you like about your current rifle while gaining the ability to hunt in the dark.
Created: August 10, 2026 · 10:05:21 UTC
