The x27 thermal clip-on sight

The X27 Clip On FLIR Night Vision Device is a battle tested military combat rifle scope. The X27 can be used as a 3 in 1 normal handheld thermal spotting scope, a Clip on weapon mounted thermal rifle sight or a dedicated thermal rifle scope.

3 Uses For The Price Of 1

The X27 can be used as dedicated thermal scope, a thermal clip-on sight, or a handheld thermal spotting scope.

Quick Release Mount

Remove from the rail easily with the quick release positive locking lever.

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Detector type: Hand select, high sensitivity Uncooled Focal Plane Array – USA
Refresh rate: 60 Hz
Resolution: Hand select 640 x 512 sensors with ultra sensitive, crisp imagery with TTM (Target Temperature Measurement)
FOV: 14.8 ° × 11.8° (H x V)


  • X27 Clip On / Standalone Thermal Rifle FLIR Scope / Military Grade
  • External Video output cable
  • Quick-Release 1913 Mount
  • Flip Up Lens Cap
  • CR123 Batteries
  • Rubber eyecup
  • Rubber scope hood boot
  • Night vision filter
  • Quick start guide
  • Operations manual
  • Lens care kit
  • Heavy Duty Hard Case
  • Lifetime Support, full 1 year warranty


Product shown herein is subject to US export regulations and may require a license prior to export. Any diversion contrary to US Government regulations is prohibited.



The X27 Clip On Thermal Rifle Scope has been proven by the US Armed Forces to be a rock solid combat optic. Advanced optical engineering produced a thermal rifle scope with the unique ability to be mounted in front of almost any daytime rifle scope optic, which converts that day scope into a thermal weapon sight without having to re-zero your day scope.

Hard to believe- but absolutely true! There is no need to make any zero adjustments when putting on or taking off the X27 clip on thermal scope. Simply mount the X27 clip on thermal sight to your standard picatinny rail in front (the barrel end) of your day scope -and bam- instant thermal scope. This unique optics design allows the X27 clip on FLIR scope to mate to almost any day scope and works exceptionally well with common military ACOG style scopes.

Of course, that’s not the whole X27 clip on Infrared scope’s story. The X27 Clip on thermal rifle scope can also be used as a stand-alone thermal weapon sight with its own internal reticle, or it can also be used as a handheld thermal imager. Versatility, advanced optical engineering, and rugged, combat-proven design make the X27 inline front mounted thermal rifle scope the thermal tool of choice.

  • Intelligent Design for Easy Operation
  • Uses standard CR123 batteries in a quick release cassette. CR123 batteries are available worldwide at any drugstore or electronics retailer.
  • Monitor or record the thermal rifle scope activity with the waterproof external video output connector.
  • Designed for ease of use in the most demanding conditions, like the dark of night or while wearing protective gear.
  • Can be used as a state of the art dedicated thermal rifle scope mounted to standard Picatinny rail.
  • Remove from the rail easily with the quick release positive locking lever.
  • X27 Clip On Thermal Rifle Scope and target without the need to re-zero your current daytime rifle scope.
  • Use the internal reticle as a clip on or stand alone thermal rifle scope.
  • Rely on the durability of a completely waterproof scope designed for the rigors of modern warfare.

Mounting Options

Unlike existing thermal scopes, the X27 can function equally well as a stand-alone thermal weapon site, a clip on thermal rifle scope, or a handheld thermal imager. Versatility is a hallmark of the X27 thermal platform.

The x27 thermal clip-on sight


The x27 thermal clip-on sight


The x27 thermal clip-on sight


Feature details
The x27 thermal clip-on sight

Quick Release Rail Mount

The X27 thermal rifle scope locks solidly onto a standard Picatinny gun rail. This thermal scope is designed to “clip on” and be removed very easily. To facilitate ease of use, the X27 incorporates the widely respected throw lever style mount that allows the scope easy on/off functionality while maintaining a rock solid attachment to your weapon.

The x27 thermal clip-on sight

Advanced Clip On Optics

The heart of the X27 is its precision engineered optical train that allows the thermal scope to be attached to the front of any day scope instantly transforming it into a thermal rifle scope. The precise alignment of the X27’s internal optics means that you do not have to be exact about mounting it in front of your day scope. As long as you can see the thermal image in your day scope, you know that your gun will fire as true as it does in the daytime. The X27 is a true clip on thermal weapon sight that does not require you to re-zero your weapon!

The x27 thermal clip-on sight

Internal Reticle

Versatility is a central feature of the X27 thermal clip on scope. The X27 also functions as a stand alone thermal weapon sight (TWS). Simply activate the internal reticle on the the X27 sub menu and you now have a fully functional thermal weapon sight at your disposal. The reticle has internal windage and elevation controls so that you can easily zero it in, find your target, and start shooting. Now you have a clip on and stand alone thermal weapon sight.

The x27 thermal clip-on sight

Standard Batteries

The X27 operates on standard CR123 lithium batteries. The batteries are housed in a watertight battle tested compartment. The battery cassette makes changing batteries easy even while wearing gloves or in the dark of night while still maintaining a watertight fit. CR123 batteries are readily available around the world at local electronics stores, photo stores, and even drugstore chains. Standard batteries mean that you don’t have to pay for overpriced proprietary batteries, or even worse, be stuck in the field without the right batteries.

The x27 thermal clip-on sight

Video Output

The X27 clip on thermal weapon sight comes equipped with a standard NTSC video output function that makes it easy to connect to an external monitor (for extended viewing) or to a digital video recorder (for evidentiary or training purposes). All external connectors are watertight to maintain the integrity of the scope.

The x27 thermal clip-on sight

Thermal Weapon Sight

The clip on thermal weapon sight X27 is known for its versatile performance. Not only is the X27 a breakthrough clip on thermal weapon sight, but it can also be used as a dedicated thermal rifle scope. Simply activate the internal cross hair and mount the X27 to your standard Picatinny rail. Zero it in and you now have a dedicated thermal rifle scope. The X27 gives you the flexibility to operate as your mission needs dictate.

The x27 thermal clip-on sight

Waterproof Combat Ready Design

The X27 is a military grade thermal weapon sight design for modern warfare. The highly sophisticated sensor system and advanced optical engineering of the X27 are cradled in a rugged shock resistant housing designed to take the abuse of combat. The X27 is waterproof, shock resistant, and ready to roll.

The x27 thermal clip-on sight

Tactile Buttons

The X27 is equipped with carefully designed tactile buttons that are intuitive and easy to use. Onscreen menus control all the functions of the X27 thermal weapon sight so that you can have complete control of your scope with fewer buttons. The over-sized buttons are uniquely shaped for easy use in the dark or with gloves on.


Thermal Clip-On Rifle Scopes In Action

View our demonstrations of our thermal clip-on rifle scopes in the field and on the range!

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Specifications Of The X27 Thermal Clip-On Sight
FPA Format320 x 240
Refresh Rate:30 Hz Real Time
Detect Mobile Manover 700 m
Weapon Sight1X & 2X
Field of View (Standard)12º
Continuous Operation8+ Hours
Eye Relief25 – 305mm
Weight680 gr. (24 oz.)
Dimensions175 x 68 x 84mm (6.9 x 2.7 x 3.3 in)
Power Requirement(4) CR123 Batteries or 9-28v DC External Power Supply
LensHigh Grade Germanium
WaterproofUp to 66ft in salt water
Polarity ControlBlack Hot & White Hot
Is the X27 thermal scope waterproof and durable for combat situations?

The X27 clip-on thermal scope is described as having a waterproof combat design, intended for modern warfare scenarios. Its tactile buttons are designed for ease of use in demanding conditions, such as during nighttime or while wearing protective gear.

What is the effective detection range and refresh rate of the X27 scope?

The X27 scope is capable of detecting a mobile human at a range of over 1000 meters, with a real-time refresh rate of 30 Hz. This makes it suitable for long-range targeting and reconnaissance

Can the X27 thermal scope be used with any optical day scope, and how does it perform in adverse conditions?

The X27 thermal scope is a clip-on device that can be used with any optical day scope. It’s designed as a multi-purpose infrared scope to perform under the worst conditions without failing. This scope has been proven by the US Armed Forces to be a solid combat optic, showcasing its reliability and performance in adverse conditions

X27 not suiting your needs? View our other related thermal clip-on weapon sights!

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The LWTS is the latest FLIR thermal scope from Insight Technology / L3 Warrior Systems. The L3 LWTS is a high resolution, rugged military thermal scope that is used for hand held and precision thermal weapon sighting applications.

SPI spartan thermal clip-on scope

SPI Spartan Thermal Clip-On Scope

This system employs an ultra-sensitive, hand-selected uncooled microbolometer with solar protection, offering a 60Hz refresh rate and a resolution of 384 x 288. It has a 7° x 5° field of view (FOV) by default and can switch to an 8° x 10° FOV in the 384-35-C model.

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For pricing and information on our low-cost thermal clip-on scopes contact us below!