The shooting community has never enjoyed more optic choices than we do right now. It’s easy to think that many optics are merely the same thing in different packaging, and it is true that optic manufacturers constantly seek ways to make themselves stand out. Cyelee Optics has done that with the Chameleon FLEX, which continues the company’s line of handgun optics equipped with their proprietary STIG-RS system for shooters with astigmatism.
Aside from the reticle, the Chameleon FLEX is solidly built, with other features to commend it past the STIG-RS advantage. We’ll cover all that below.
I was only vaguely familiar with Cylee Optics before stopping by their booth at SHOT Show 2026 to ask if they had anything new. They showed me the Chameleon FLEX and offered me a preproduction test model. I accepted and have been running the optic on my IWI Masada Tactical for about a month now. Several range trips later, I have a firm handle on what the Chameleon FLEX is all about. But first, the specs.
Cyelee Chameleon FLEX Specifications
- Reticle: User-Selected 2 or 6 MOA Red Dot
- Trademarked STIG-RS (Astigmatism Relief System) Reticle
- Motion Activated
- Footprint: Trijicon RMR/Holosun 407c and 507c
- Window Size: 1.04 x 0.89 inches (26.5 x 22.5 mm)
- 7075-T6 Aluminum Construction
- IPX7 Waterproof Rating
- Weight: 1.4 Ounces
- 8 Daylight Brightness Settings and 2 Night Vision Compatible
- Power Source: 1 CR1632 Battery (Included)
- Battery Life: 50,000 Hours
Cyelee Optics Chameleon FLEX Features
The Chameleon Flex’s 7075-T6 aluminum housing is solid. I wondered whether the forward-leaning design might interfere with ejected cartridge cases, but there was no problem.
That configuration also sets the lens deeply, providing extra protection from dirt, smudges, and glare, front and rear. It also allows easy access to the top-mounted battery compartment, for which Cyelee includes a tool. The Chameleon FLEX ships with various screws and the appropriate tools, as most optics do.
I like the clean, rounded shape—no corners to snag on clothing during the draw stroke. The brightness control buttons adorning each side are large and tactile enough for gloved use. They are also faintly audible. I prefer that setup to two smaller buttons on the same side. I don’t have to look at the controls, and I can develop the muscle memory to hit them every time.
The window is large, making it easy to acquire the reticle and look through it to the target. The reticle itself is either a 2 or 6 MOA red dot. You set it to whichever you prefer. I like the larger dot on a handgun because I can acquire it faster when presenting the firearm. The larger dot is also readily visible to me if I have to use the gun without my glasses. The 2 MOA dot isn’t as certain for me.
Which brings me to the STIG-RS LED emitter. I have a mild astigmatism. Dots are generally blurry when I look at them without my glasses. But the Chameleon FLEX’s reticle is a bit less blurry. The outline is more defined, rather than just being a red blob. Maybe you have to see it, with an astigmatism, to understand, but that was my experience when I tested it.
The Chameleon FLEX on the Range
The Chameleon FLEX held up well on the range. It remained firmly attached through 200-odd rounds of 9mm and never lost zero. The optic didn’t snag when I practiced drawing and holstering. I also acquired the reticle quickly and reliably.
The large window is a big plus. I run a lot of transition drills, both horizontal and vertical. The Chameleon FLEX made it easy to track through those transitions and acquire my targets quickly and reliably. The window is perhaps my favorite feature. The glass is clear, and I had no problems sighting through the reticle.
I do not run night vision, so I was unable to test that feature, but I have no reason to believe it doesn’t work as advertised.
I don’t deliberately abuse my equipment, but optics get knocked around. So, it seemed reasonable to perform a few drop tests, especially considering that the Chameleon FLEX looks pretty stout. I dropped the Masada Tactical from shoulder height, directly onto the optic, five times. My range’s pistol bay is lined with gravel, so the impact isn’t exactly soft. The optic continued to run properly, and the mistreatment didn’t even scratch the finish.
Speaking of the finish, Cyelee’s website says the optic comes in matte black, but mine has a kind of winter camo that I like. That’s maybe because it’s a preproduction model, but something like that may become available down the road.
The Chameleon FLEX performed very well through every test, and I was quite pleased with it, but I would prefer that it had an integral rear sight notch for iron sights. That’s my only real complaint.
Final Thoughts
This is a nice little handgun optic. My first impression was that it’s a “no-frills” unit, and I still think that to a certain degree. It doesn’t look fancy, but it does everything I need, and then some. The STIG-RS system works, and using the optic revealed its other advantages, like the large window and easily manipulated brightness controls. Even the deep-recessed glass.
I like that it has a common footprint that works with a wide variety of pistols. The winter camo finish is also cool. It’s different, but again, I can’t say when or if that might be available for purchase. I still dig it.
Either way, I like the entire package. In fact, I like it better than I thought I would. I had no experience with Cyelee Optics before this, so I went in cold.
My initial impression is quite good. This isn’t just a gimmick optic aimed at people with astigmatism, though it serves that purpose well. It seems like a good all-around pistol optic, and you can use it even with perfect vision.
The price point makes it even better. The Chameleon FLEX is very affordable at $265, but I don’t think I’d call it “budget.” This optic has a lot going for it; things that weren’t clearly evident before I hit the range. I came away impressed. Maybe you will too.
The Cyelee Optics Chameleon FLEX is available for pre-order as of this writing. It will be available soon.
