The Ruger RXM is Ruger’s move into the optics-ready striker-fired pistol space, and it’s clearly designed with red dots in mind from the start. Instead of forcing you to work around proprietary slide cuts using mounting plates, the RXM features a purpose-built optics-ready slide that supports today’s most common footprints including the RMR, RMSc, and DPP.
From a practical standpoint, the RXM checks the boxes most shooters care about: a straightforward striker-fired design, reliable Ruger build quality, and an optic-ready configuration. Whether you’re setting the pistol up for range use, training, or everyday carry, the RXM was clearly designed to be a plug-and-play host for many modern features.
This guide focuses on which Osight optics fit the Ruger RXM, breaking down compatible footprints, mounting considerations, and what to expect once installed.
Quick Nav
- Pistols this article applies to
- Osight Optics we recommend for the Ruger RXM
- Why Consider Osight
- What Optics Footprint is the Ruger RXM
- Optics Adapter Plates for the Ruger RXM
- Best RMR Footprint Osight Optics for the RXM
- Best RMSc Osight Optics for the RXM
- How to choose between red or green reticles
- How to choose between open vs closed emitter
- How to decide which reticle style is best for you
- Conclusion
Which the RXM models does this apply to?
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Which Osight Optics do we recommend for the RXM?
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Larger Optics - RMR Footprint Using RMR Pin Set |
Smaller Optics - RMSc Footprint Using RMSc Pin Set. |
Why Consider an Osight Red Dot?
Osight has positioned itself as a budget-oriented optic brand that still includes a solid set of modern features. For shooters who want to step into a pistol red dot without paying premium prices, Osight offers options that cover the basics well while remaining accessible.
One area where Osight stands out is its willingness to experiment with new ideas. Features like the magnetic charging cover, integrated pop-up rear iron sights on the XR, and the use of OAL housing material on select models show an effort to innovate rather than simply copy existing designs. While these features don’t replace the proven track record of higher-end optics, they do offer interesting alternatives at lower price points.
Overall, Osight can make sense for shooters looking for a cost-effective red dot with modern conveniences, especially for range use, secondary pistols, or as an entry point into optics — while more established brands like Holosun remain the go-to choice for those prioritizing long-term track record and refinement.
What optics footprint is the Ruger RXM?
The Ruger RXM uses a modular optics mounting system rather than a single fixed footprint. Similar in concept to multi-footprint systems like the Springfield Echelon, the RXM slide is drilled with multiple screw locations and uses removable steel recoil pins that you install based on the optic footprint you’re mounting. This design lets the RXM support several popular red dot patterns without the need for plates.
For optics that use the RMR footprint, you’ll install the RMR pin set in the slide and mount the optic directly using the corresponding screw holes and 6-32 screws.
All RMSc-footprint Osight red dots are a direct fit on the Ruger RXM using the RMSc pin set and M4 screws.
What adapter plates exist for the RXM?
The Ruger RXM doesn’t require an adapter plate for RMSc optics, since you can install all RMSc-footprint red dots directly using the RMSc pin set. That said, there is an optional solution worth knowing about if you care about overall fit and finish.
Freedom Gorilla offers an RXM-to-RMSc adapter plate designed specifically for this platform. When you mount an RMSc optic directly to the RXM slide, you’ll notice a small gap at the front and rear of the optic. That’s normal—the RMSc footprint optics are physically smaller than larger footprints like RMR or DeltaPoint Pro, which the RXM slide is sized to accommodate.
The RXM-to-RMSc plate fills in those front and rear gaps completely, giving the optic a more integrated, flush appearance while also providing a solid mounting surface between the optic and the slide. It’s not a requirement for function or reliability, but for shooters who prefer a cleaner look and tighter visual fit, it’s a nice upgrade to consider.
Best RMR-Footprint Osight Optics for the Ruger RXM
Below are the top Osight optics that use the RMR footprint and are compatible with the Ruger RXM. These are larger, duty-style red dots with a bigger housing and a wider viewing window compared to the smaller RMSc optics. Because of their size, you can expect a small amount of slide overhang on the RXM, but that’s normal and purely cosmetic.
To install any RMR-footprint Osight red dot on the RXM, you’ll use the RMR pin set included with the pistol and use 6-32 screws that come with the optic.
1. Osight C Multi-Reticle Red Dot - Versatile RMR Optic
Buy the Osight C At The Best Price
The Osight C delivers speed, precision, and versatility in a rugged red dot sight with an RMR footprint, open emitter, and side-loading battery.
The Osight C features a Multi-Reticle System that allows you to choose between a 3 MOA dot, 32 MOA circle, or a dot-and-circle combination for maximum versatility. It is available in a red or green reticle.
It boasts a Large Field of View with a 0.95" × 0.75" window and multi-coated lenses, maximizing light transmission for a crisp sight picture. It is powered by a Side-Loading CR1632 Battery tray, allowing for easy swaps without removing the optic or losing your zero.
Built on the RMR Footprint, it's compatible with most optics-ready slides or plates. It also includes Motion Sensor Technology that activates instantly and powers down after 3 minutes of inactivity to extend battery life.
2. Osight XR Enclosed Red Dot – RMR Footprint with Magnetic Charging Cover
Buy the Osight XR At The Best Price
The Osight XR is an enclosed-emitter pistol red dot built on the RMR footprint, giving you sealed reliability with broad compatibility on full-size and compact pistols that accept RMR optics or plates.
The enclosed emitter design helps protect the LED from debris and moisture, and the aspherical lens provides a clear, distortion-free sight picture with parallax-free performance for fast, natural target acquisition.
Instead of a traditional replaceable battery, the Osight XR is powered by a magnetic charging cover that charges the optic while displaying real-time battery levels for both the cover and the sight—no battery swaps and no guesswork.
Reticle options are highly flexible, featuring an advanced multi-reticle setup with a 2 MOA dot or 6 MOA dot and a 32 MOA circle, allowing you to choose speed, precision, or a circle-dot combination depending on your shooting style.
One unique feature is the integrated Collapsible Backup Rear Sight (CBRS), which deploys with the push of a button to provide a true backup aiming reference if the optic is powered off.
3. Osight X Red & Green Dot – MRS Reticle & OAL Housing
Buy the Osight X At The Best Price
The Osight X is an open-emitter pistol red dot built on the RMR footprint, offering wide compatibility with full-size and compact pistols that accept RMR optics or adapter plates.
The open emitter design keeps the optic lightweight while providing a large field of view through a multi-coated lens, delivering a clear sight picture with minimal distortion for fast target acquisition.
Power comes from Osight’s magnetic charging cover, which charges the optic while displaying real-time battery levels—eliminating traditional battery swaps and keeping the optic ready without removing it from the slide.
The Osight X features a Multi-Reticle System with a 3 MOA dot, a 32 MOA circle, or both combined. Reticle options are available in red or green, allowing shooters to tailor visibility and speed to their preference.
The housing is constructed from OAL proprietary aluminum alloy, offering a lightweight build with increased strength and durability compared to standard aluminum, helping the optic maintain zero over extended use.
4. Osight 3 MOA Green Dot – 3 MOA Reticle & 7075 Housing
Buy the Osight 3 MOA At The Best Price
The Osight 3 MOA is a simple, durable open-emitter pistol red dot built on the RMR footprint, designed for shooters who want a clean green-dot aiming solution without extra reticle options.
The large 0.94 x 0.85-inch viewing window provides a generous sight picture, making the 3 MOA green dot easy to track through recoil and fast to reacquire between shots.
Power is supplied by Osight’s magnetic charging cover, which charges the optic while displaying real-time battery levels for both the cover and the sight—eliminating battery swaps and reducing downtime.
The optic uses motion and light sensors to automatically manage brightness and power. It shuts off after inactivity, instantly wakes on movement, and offers both automatic brightness adjustment and manual control with 10 daylight and 2 night vision settings.
Best RMSc-Footprint Osight Optics for the Ruger RXM
Below are the best Osight optics that use the RMSc footprint and pair especially well with the Ruger RXM. These optics are smaller and more compact than full-size RMR options, making them a great choice if you want a lighter setup, less bulk, and a cleaner overall fit on the slide.
All RMSc-footprint Osight optics will direct-mount to the RXM using the RMSc pin set and M4 screws, with no adapter plate required. Because RMSc optics are physically smaller than the RXM’s full-size optic cut, you may notice a small gap at the front and rear of the optic when mounted directly. This is normal and does not affect function or reliability.
5. Osight SE Red & Green Dot – Enclosed RMSc Optic
Buy the Osight SE At The Best Price
The Osight SE is a compact enclosed-emitter pistol red dot built around the RMSc footprint, making it a direct-fit option for many slim and micro-compact pistols.
Unlike open-emitter optics, the Osight SE uses a fully enclosed emitter design, protecting the LED from dirt, debris, and moisture for consistent performance in harsh conditions.
Power comes from a side-loading CR1620 battery tray, allowing you to change the battery without removing the optic or losing your zero.
Reticle options differ by color. The Green reticle uses a simple 6 MOA dot for fast acquisition and excellent daylight visibility. The Red reticle features a 2 MOA dot with a 32 MOA circle, giving shooters a balance of precision and speed depending on the application.
6. Osight S Red Dot – Enclosed RMSc Optic with Rechargeable Battery
Buy the Osight S At The Best Price
The Osight S is a compact enclosed-emitter pistol red dot built on the RMSc footprint, designed for shooters who want durability, rechargeability, and a flexible multi-reticle system.
The enclosed emitter design fully seals the LED from dirt, debris, and moisture, while the aspherical lens delivers a clear, distortion-free sight picture with parallax-free performance.
Instead of a traditional replaceable battery, the Osight S uses a rechargeable system powered by a magnetic charging cover. The cover features a real-time battery level display and can provide multiple full charges without removing the optic or disturbing zero.
The Osight S features a Multi-Reticle System with a 2 MOA dot, a 32 MOA circle, or both combined, allowing shooters to tailor speed and precision based on application.
The housing is constructed from OAL™ proprietary aluminum alloy, which is nearly as light as 7075 aluminum while offering increased hardness, tensile strength, and yield strength for improved impact resistance and long-term durability.
7. Osight K Red Dot - Perfect for Concealed Carry
Buy the Osight K At The Best Price
With a red 6 MOA dot, side-loading battery design, and RMSc footprint, it’s a perfect fit for concealed carry.
The Osight K features a 6 MOA Dot Reticle which is bright, bold, and fast. The larger dot makes rapid target acquisition easier under stress, with improved visibility for defensive use and quicker follow-up shots from the holster.
It is powered by a Side-Loading CR1620 Battery, allowing for easy replacement without removing the optic—saving your zero and your time. The optic features direct-mount compatibility with the RMSc Footprint standard.
It includes Motion Sensor Technology that activates instantly with movement and powers down after 3 minutes of inactivity. For peace of mind, the Low Power Indication flashes the reticle three times per minute when voltage drops below 2.2V.
Choosing between Red or Green Reticles
It’s common to go back and forth between red vs green reticles, so here are a few practical points to help you decide which one makes the most sense for your setup.
- Green reticles are often easier on the eyes, especially during longer range sessions or extended training.
- Shooters with astigmatism sometimes see a cleaner dot in green. While results vary from person to person, many customers report that a green reticle appears more defined and less “smeared” compared to red.
- Green will not washout on backdrops like green grass, foliage, or green colors.
- In theory Green dots can have a longer battery life because Green is brighter, so for example a green dot on brightness setting 6 may be the same brightness as a red dot on setting 7 - which would save battery life.
If you want to learn more check out our full article about Red vs Green Dot Pros & Cons here.
Choosing between Open vs Closed Emitters
A simple way to think about open vs enclosed emitter red dots is to match the optic to how and where you actually carry the pistol.
If your RXM will spend a lot of time outdoors in the elements like rain, snow, sleet, or harsh weather, an enclosed emitter has a clear advantage. With the emitter sealed inside the housing, water, dirt, and debris are far less likely to interfere with the dot.
For shooters who primarily carry OWB, especially for duty, range work, or outdoor use, enclosed emitters are often the better fit for the same reason: more protection from the environment and fewer worries if conditions turn ugly.
On the other hand, if you mostly carry IWB or your pistol isn’t regularly exposed to heavy weather, an open reflex optic works perfectly well. Open emitters can still function in rain and snow, but enclosed designs add an extra layer of reliability and peace of mind.
One other thing to consider is maintenance. Open emitter optics can collect dust, lint, and debris over time, especially with daily carry, so occasional cleaning is part of ownership. Enclosed emitters are easier to keep clean, since the emitter itself is sealed off.
To learn more about Open vs Closed emitters you can check out our Open vs Closed Emitter Guide here.
How to decide which reticle style is best for you
In this guide we covered a few different reticle options. If you need some help deciding which is best for you here are some of our thoughts on each.
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Conclusion
The Ruger RXM stands out as a genuinely flexible optics-ready pistol. With support for RMR, RMSc, and DPP-style footprints through its modular pin system, it gives you far more freedom than many pistols in its class when it comes to choosing a red dot. Whether you prefer a larger, duty-style optic or a compact carry-focused setup, the RXM accommodates both without forcing you into proprietary plates.
Osight optics pair well with the RXM because they cover both ends of the spectrum, larger RMR-footprint optics for those who want a bigger window and smaller RMSc options for a CCW low-profile setup. With multiple reticle styles, emitter designs, and power options available, there’s no single “right” choice, just the one that best matches how you plan to use the pistol.
As always, the best approach is to decide how the RXM will be used most often, then select the optic and reticle that supports that role. If you still have questions or want help dialing in the right setup, feel free to reach out, we’re always happy to help!
