Thermal Wepon Sights
As technology rapidly expands into every aspect of our lives, one of the popular trends in shooting optics is thermal sights. These electronic sights see heat coming off of everything around us, particularly living things. This technology has made eradicating feral animals and dispatching pests not only easier, but a 24 hour activity. Today we are taking a look at another new to me thermal weapon sight. This one comes from Goyojo Optics, a company that makes a variety of sporting devices. Our subject today is the Goyojo GRL 335 Thermal Weapon Sight.
The Goyojo GRL 335
Goyojo’s GRL 335 is a compact thermal optic, that reminds me a little bit of the a Trijicon Acog. Despite its compact size and simple operation it is still packed with a great deal of features that make it very handy.

Like most modern thermal optics, the GRL 335 incorporates various color palettes to select from. As well as picture in picture, photo and video recording capabilities. With its simple four-button control panel, you can zoom in, change colors and recording settings.

You can also access a variety of different menus to adjust things like reticle type and color. And change settings for the other features like shot activated recording. Zeroing can also be done within these menus. All images are captured on a 64GB micro SD card housed in the base, right next to the USB-C charging port. What appear to be turrets on either side are actually the battery housing. The battery itself can be removed and charged externally.

The ocular focus at the rear allows you to focus on the display. While up front, there is a blue ring around the objective you can use to focus the thermal sensor.
Specifications
- Sensor Resolution: 384*288
- Objective Lens: 25mm/35mm
- Optical Zoom:
GRL325: 3x
GRL335: 4x - Digital Zoom: 1x, 2x, 3x, 4x
- Display Resolution: 1024*768
- Operating Time: 6-8h
Features
- Picture In Picture:Yes
- Photo/Video:Yes
- Audio:No
- RAV & Wi-Fi:Yes
- Hot Track:Yes
- Classic One Shot Zero:Yes
- Thermal One-Shot Zero:Yes
- Shot Activated Recording:Yes
The whole unit comes neatly in a zippered soft case. Included with are a couple batteries, additional rubber eye-pieces, charging cables and a manual.

Mounting and Zero
Installing this optic on a rifle is very easy using the QD clamp. Much like other high quality optics, this one has its own clamping mount, with a security lock to prevent unintended opening. I clamped the optic to the sight rail of my rifle, and set it up looking downrange.

To zero the optic, I would shoot a shot, and watch the impact. Then you can freeze frame using the zeroing menu, with the frame frozen, you can move the reticle from where it is currently, to the point of impact. It took me a couple tries, but mainly that was me figuring out the system. But after a few minutes, I had it zeroed enough for testing.
I also took the time to familiarize myself with different reticle options, and different zoom settings. Once I was on top of it, I decided it was time to head into the mountains.
In the Field
Hunting is the true calling of thermal optics, and that is where I intended to use it. Early spring has some different hunting opportunities in my part of the country, but for now I would have to settle with hunting small varmints. Squirrels and marmots and if I was lucky a coyote would be my options. The AR15 rifle I had the GRL 335 mounted to was more than enough rifle for any of those targets.

Over the course of several trips, I would use the Goyojo to find all kinds of animals. Both animals I could target as well as others that I wouldn’t.
Target ID
One thing I have found about identifying target animals with thermal optics, is that the environment matters quite a bit. Using the different color pallets in the GRL 335 was also helpful. Things like rocks and tree and other things can vary in temperature greatly depending on the conditions. Oftentimes it takes a while to get used to identifying things. Particularly in the day time until you see something that is actually living and warm it can be a bit challenging to know.

Again, using the different color pallets available is a great tool to help in this effort. The different zoom settings also are important to understand, for both scale and detail. And I also had to stay on top of the focus of the thermal sensor, keeping a sharp focus greatly helps you recognize both targets and their surroundings.

Controls
One of my favorite things about this optic is how easy and simple the controls are. Unlike some other thermal optics, the main and most important features are all within a single button push. Making quick changes in zoom, or snapping a photo or starting video can all be done without taking your eye off the display.

Of course many of the finer features can be changed by accessing the various menus. And the central placement of the button pad right on top makes it easy to acces. The textured pad also gives tactile identification, so even in the dark you can make adjustments on the fly.
Pictures and Videos
The ability to capture shots and videos through these optics is the icing on the cake. Not only do you get to have fun hunting, but you can capture the crucial events on film to share with others. I used the capture to get stills and clips of different hunting and shooting events. By pressing and holding the X button, you get a quick toggle between picture and video. You then capture a shot or start recording using the same button.

All the images are captured on a micro SD card that is housed in the foot of the optic. The MP4 files can be transferred and used as you see fit. I did have a couple issues editing and manipulating the files, but I can’t tell you if that was a problem with the files or if it was simply me not using compatible software. Either way, as you can see I figured out a way to get both pictures and video where I needed it.
Focus
Adjusting the thermal sensor focus on this unit is very easy, its location makes it quick to grab with your fingers. And I like how it is recessed in the housing to prevent it getting moved inadvertently. Adjusting the sensor allows sharp focus as close as a few feet away, and i was impressed with how clean the image could be focused.

The display also has its own twist-to-focus feature. This is handy for those who’s eyes aren’t what they once were. There is also two different rubber eye cups to select from.
Useability
I’ve already mentioned how I like the simplicity of this unit. Particularly for someone who is new to thermals. It has some pretty concise instructions, and if you follow them you will have no problem running this unit.

Battery life is great, and the fact that it comes with a charger and extra battery means you can always keep a backup in your pocket.
Value
With an MSRP just under a thousand dollars, this optic is a great value. The ony thing left to ensure its value is its durability over time. This optic makes a lot of sense for a first time thermal, as it is more affordable than other options. I intend on giving this scope a good good thrashing to see how it stands up to use, make sure you check back in the future as I will update here as time passes.

Pros and Cons
Pros
- Affordable- for the price its features and function are great
- Compact- small footprint means less bulk
- Quick to zero- easy to understand and adjust
- Image Capture- both video and still images can be recorded
- Added Accessories- mounting options, eyecups and other included accessories
Cons
- Made Overseas- potential conflict
- Unknown Brand-

Concluding Thoughts
I really like this optic, and I plan on using it to the extend possible in my hunting adventures. I like how simple it is, and how easy it is to adjust and understand all the features and functions. Whether you plan on using this optic simply for fun, or in preparation for an impending apocalypse, it gives you a simple sight that can be used around the clock.


























































