The Aimpoint ACRO made the closed emitter famous. The Steiner MPS followed with a similar construction and aesthetic. Some people love the “mailbox” design, some hate it. If you’re one of the latter, there is a sleeker option. We now have a closed emitter, rugged, extremely compact optic with a ubiquitous RMS-C footprint. This optic exhibits clear glass, shake-awake technology, a large viewing window, no “tunnel vision” and it’s not made in China! The new Steiner MPS-C is here, and it is one of my favorite new drops from SHOT Show 2026. I mounted one to my Smith & Wesson M&P 2.0 and ran a few hundred rounds in the bright Florida sun. Let’s discuss the construction, the features, the pros and the cons.
First, let’s go through a quick background of Steiner Optics. Founded in 1947 in Bayreuth, Germany, Steiner first gained prominence by supplying binoculars to the West German military. Steiner was the first to introduce nitrogen-filled optics, which is an innovation that still carries on to this day. With countless military and law-enforcement contracts around the globe, Steiner has cemented itself as one of the true innovators and reputable manufacturers of optics of all kinds. Now owned by Beretta Group, Steiner continues this legacy with its newest offering of weapon-mounted optic, the MPS-C.
In 2021, Steiner released the MPS (Micro Pistol Sight). This larger size pistol optic uses a modified “ACRO” style footprint for mounting. The original MPS is touted for its rugged construction, enclosed emitter design, superb light transmission due to Steiner’s premium glass and coatings technologies, and true 1X performance. The MPS is right at home on a large handgun, a small PDW, or even a full-size carbine to keep weight down while maintaining a lower profile than most carbine optics.
Enter the next generation of the MPS, the MPS-C. C is for "Compact," that’s good enough for me. And compact it most certainly is. Equipped with the RMS-C footprint, it’s designed for everyday carry and would be perfect on most optic-cut conceal carry options available today. Built with hard-anodized class III aluminum and reinforced sidewalls, this thing feels like a tiny tank. The MPS-C offers nigh-uncompromising durability and strength while weighing only 1.13 ounces! Well under 1.5 inches of all-around size, this dot really is compact, even with its easy-to-access, side-mounted 1632 battery.
Mounting this optic was simple. Steiner sends a litany of screws for all the most popular handguns. I’m sure you will find what you need in the box, though I didn’t use those. My M&P came with screws and plates for optic mounting, and the RMS-C accoutrements worked perfectly f or my purposes.
Shootability with this little dot was just as you would expect from Steiner, with one caveat. The crisp 1.6-MOA dot makes it easy to pinpoint a specific area on your target. The dot is nuclear-bright and will hurt your eyes at full brightness in darker conditions. In the bright sun,it is perfect. The large 20x16 mm viewing window touts super-clear glass with almost no noticeable tint. Zeroing the optic was also simple. The provided tool or a tiny flat-head screwdriver is what you’ll need for windage and elevation. Clicks are tactile but not audible. I made very little adjustment from the factory settings and was on target within a 15-round magazine at 10 yards.
Transitions were seamless with no lag of any kind. Parallax was also extremely minimal, which is exactly what you’d expect. I was fortunate enough to be shooting in the bright, midday Florida sun to notice one small detail, though. I was wearing a black hat with large white lettering and noticed immediately the reflection of my hat in the glass when I presented to shoot. I had two other pistol optics with me, so I checked if those optics did the same thing. They did not. The Steiner was the only one that reflected the glaring white lettering of my hat onto the glass. This likely only happens with the sun in certain positions on bright days, but the fact that the other dots did not display the same anomaly made it worth noting in this article.
Shake-awake and auto-shutoff is a bit tricky with this one. For me, this is the one other “con.” With other motion-activated optics, the function is simple. Set the dot to the brightness you desire, and if you don’t touch it after a certain amount of time, the dot shuts off. When the dot detects motion again, it will reactivate to the same brightness setting as before. In my opinion, this is one of the most useful and innovative features in red-dot optics technology. It preserves your battery life, but it’s bright and ready as soon as you need it.
The MPS-C’s shake-awake is only active when the user also activates the 13-hour auto shutoff function. So, if you don’t touch your gun within 13 hours, the dot shuts off, and you need to physically turn it back on. If you are within that 13-hour window, the dot shuts off after 2.5 or 3 minutes and turns on again when motion is detected. If you turn the 13-hour shutoff function off, the shake-awake feature is also shut off and the dot will remain constantly on. I feel it is safer and more reliable to keep it constantly on than to risk having a powered-off dot when you need it. At medium brightness, you will retain 13,000 hours of claimed battery life, which is fine but still a far cry from the 40,000-50,000 hours of other optics in its class with more simplistic form of shake-awake.
The design of the MPS-C is eye-catching and inherits some design features from the bigger MPS. Angular flats, tiny serrations on the top and the protruding shroud around the front glass make this optic look sleek and menacing. The extra large +/- buttons on the left side are easy to locate and actuate even with gloves hands. The white brand lettering on the top and side isn’t too obnoxious but can be easily fixed with a touch of black paint. There are no sharp edges, and the corners are all rounded to prevent poking or snagging while concealing. This is a beautifully designed optic.
The new Steiner MPS-C was built for anyone who values extreme durability, aesthetics and clean ergonomics. It’s a great option for someone who lives in a bright environment and needs a bright dot to match. If you desire the smallest footprint for concealment but a large viewing window, then this is the optic for you. For the consumer who strives to give less of their hard-earned money to Chinese manufacturers and values quality German design and engineering, the MPS-C checks that box as well. I love the design of this optic. Even with its small shortcomings, I will continue to use it and run it through its paces. While it is not currently on my main EDC, that could change in the future. Visit your local dealer to see one in person and check out steiner-optics.com for additional information.
Steiner Optics MPS-C Specifications
Magnification: 1X
Footprint: RMS-C
Reticle: 1.6 MOA Red LED dot
Brightness: 10 daytime, 2 NV
Weight: 1.13 ounces
Dimensions: 1.46 x 1.27 x 1.08 inches
Window Size: 20x16 mm
Housing: Hard anodized aluminum Class III
Battery: CR 1632
Battery Life: low setting 46,125 - medium setting 13,000 hours
Features: Shake-Awake/Auto Shutoff
MSRP: $575
