Armasight Jockey 640 Thermal Clip-On

Sponsored Content

Armasight Jockey 640 Clip-On Thermal Optic is a compact, lightweight clip-on thermal unit that goes in front of any standard day optic to quickly convert your day rifle into a night ready. Rated for up to .308 Winchester, this little guy is a powerful tool for any hunter or tactical shooter.

The short and quick of it is that the Jockey 640 uses a QD mount made by American Defense to snap onto a standard 1913 Picatinny rail and uses the ArmaCORE 640 x 480 12um Thermal Core detector and a XGA OLED display for crisp thermal images. Human sized targets have a detection range of up to 932m. 

Designed and built in Tempe, Arizona, every Armasight thermal unit is an American-made unit built for maximum durability and reliability. The Jockey 640 is one of Armasight’s smaller thermal units, but it’s just as robust. 

ON THE RIFLE

The Jockey is everything that you’ve come to expect from Armasight thermal optics. 3-button design, easy-to-use menu with loads of options for what kind of thermal overlay is used, a 4x digital zoom, and a high-resolution screen that makes the most use of the ArmaCORE thermal core. 

Less than a pound in weight, the Jockey doesn’t add much bulk or heft to a rifle. The American Defense QD mount is one of the best on the market and makes taking the Jockey off just as easy as putting it on. The mount also returns to zero perfectly as long as you replace it in the same 1913 slot you zeroed it in. I find it easiest to mark the slot so I can make sure I get it right.

VERSITILITY

Something that helps the Jockey stand out is just how versatile it can be. Clip-on in front of an optic, standalone on a rifle using the digital reticle, but still light enough and small enough to be used as a handheld unit. Being able to fill all three roles in one unit gives the Jockey a surprising amount of coverage. 

While the Jockey is mainly designed with an 1-6x LPVO in mind, it works with many other types of optics as well and comes with eyepiece attachments to mate with scopes with larger objective lens. These screw on/off quickly and simply. Change the eyepiece out for the right optic, and it’s easy to get the perfect fit no matter what kind of scope you use.

Using the Jockey as a handheld unit is just as easy; just switch out the eyepiece, and it’s ready to use.

SPECS

• Detector Type: ArmaCORE™ 640 x 480 12um Thermal Core
• Refresh Rate: 60 Hz
• Thermal Sensitivity: NETD < 40mK
• Detection Range: 932m on a Human Sized Target
• Recognition Range: 233m on a Human Sized Target
• Identification Range: 146m on a Human Sized Target
• Exit Pupil: 25mm
• Field of View: 17.6° x 13.2°
• Optical Magnification: 1x unity (recommended for daytime optics with 1x – 6x magnification)
• Digital Zoom: 1x – 4x
• Display: XGA (1024 x 768) OLED
• Wireless: None
• Graphics: Active On-Screen Graphics and Iconology
• Recoil Rating: .308
• Lens System: F/1.00; 25mm manual focus
• Rear Collimator: f38mm
• Diopter Adjustment: N/A
• Power Supply: 2 x CR123A (3V) or 1 x 16650 (3V)
• Battery Life: 4 hours at 20° C
• Memory: 4 Hours of Video
• Image Processing: Digital Enhancement
• Environmental Rating: IP67
• Operating Temperature: -40° C to +50° C (-40° F to + 122° F)
• Dimensions: 147.07 x 77.22 x 77.72 mm / 5.79 x 3.04 x 3.06 in
• Weight: 398g / 0.88lbs. w/o eyepiece cap, light suppressor or battery
• Warranty: 3 years w/ registration
• Color: Black

LOOSE ROUNDS

While not as large or powerful as the Armasight Operator 640 Clip-On, the Jockey brings a lot of bang for the buck while maintaining a smaller profile, making it a lighter and more handy option, especially on smaller rifles or being used as a handheld thermal. 

Great image quality and rated for up to .308 Win recoil levels, the Jockey gets the job done without weighing you down. Overall, a very handy and helpful thermal sight.

Why you can trust RECOIL

---

Since our founding in 2012, RECOIL remains the premier firearms lifestyle publication for the modern shooting enthusiast. We deliver cutting-edge coverage of guns, gear, accessories and technology. We go beyond basic reviews, providing no B.S. buyer’s guides, hands-on testing and expert analysis on everything from firearms and survival equipment to watches and vehicles. 

Our reviewers are the backbone of our operation and come from diverse shooting backgrounds: Former law enforcement, military veterans, competitive shooters, seasoned hunters and plain old firearms enthusiasts. Furthermore, we’re not just gun experts, but dedicated journalists who adhere to the strictest standards of our profession. 

At RECOIL, editorial independence is the foundation of everything we publish and the cornerstone of reader trust. Our editors, writers and content creators make all editorial decisions independently, free from outside influence. That boils down to: advertisers don’t dictate our coverage, the outcomes of our reviews or what we recommend in our buyer’s guides. First and always, our commitment is to our audience—ensuring every review and article is accurate, unbiased, and driven by real-world experience. 

Whether you’re selecting your next firearm, upgrading your gear, or exploring the latest innovations in the shooting world, RECOIL provides the trusted insights you need to make informed decisions. Learn more about our Editorial Standards and how we review products.

NEXT STEP: Download Your Free Target Pack from RECOIL

For years, RECOIL magazine has treated its readers to a full-size (sometimes full color!) shooting target tucked into each big issue. Now we've compiled over 50 of our most popular targets into this one digital PDF download. From handgun drills to AR-15 practice, these 50+ targets have you covered. Print off as many as you like (ammo not included).

Get your pack of 50 Print-at-Home targets when you subscribe to the RECOIL email newsletter. We'll send you weekly updates on guns, gear, industry news, and special offers from leading manufacturers - your guide to the firearms lifestyle.

You want this. Trust Us.