Skip to content
Holosun SCS – Best direct-mount option for Glock MOSTrijicon RMR Type 2 – Best duty-grade opticAimpoint ACRO P-2 – Best enclosed-emitter opticHolosun 507C – Best overall valueTrijicon SRO – Best competition opticSteiner MPS – Best rugged enclosed alternative
Direct Glock MOS interfaceEnclosed solar charging systemMulti-reticle systemGreen reticleAluminum housingAutomatic brightness adjustment No adapter plate requiredExtremely low deck heightExcellent factory co-witnessLightweight designFast target acquisition No removable batteryAuto-brightness may not suit everyone
RMR footprint3.25 MOA or 6.5 MOA optionsForged aluminum housingTop-tier durabilityAdjustable brightness controlsBottom battery design Proven reliabilityExcellent durabilityLong battery lifeHuge aftermarket supportOutstanding recoil resistance Battery changes require removalSmaller window than newer designs
Fully enclosed emitter3.5 MOA dot50,000-hour battery lifeWaterproof constructionACRO footprintNight-vision settings Complete emitter protectionOutstanding battery lifeExtremely rugged housingReliable in adverse weatherExcellent NV compatibility Heavier than open emittersRequires specific mounting plates
Multi-reticle systemSolar backupSide battery trayRMR footprintMultiple brightness levelsShake Awake technology Excellent valueEasy battery replacementLarge feature setStrong battery lifeGood window size Not as durable as premium duty opticsSlight lens tint
More
Share
Explore
6 Best Red Dot for Glock 17 Mos in 2026: Mounting & Compatibility
From budget-friendly to high-end: Finding the perfect red dot for your specific shooting needs in 2026.
The Best Red Dot for Glock 17 Mos in 2026 depends on how you use your pistol, but mounting compatibility is just as important as optical performance. The Glock 17 MOS remains one of the most popular optics-ready duty and range pistols, and choosing the right sight means balancing window size, durability, deck height, footprint compatibility, battery life, and practical shooting performance.
The MOS system gives shooters tremendous flexibility, but not every optic integrates equally well. Some require adapter plates, some sit lower for better co-witnessing, and others prioritize durability over sight picture size. After extensive evaluation of current-duty, concealed-carry, competition, and general-purpose optics, these six stand out as the strongest choices for Glock 17 MOS owners in 2026.
Top Product List: Best Red Dot for Glock 17 Mos in 2026
Holosun SCS
The Holosun SCS was designed specifically around the Glock MOS platform. Unlike most optics, it eliminates the need for adapter plates and mounts directly to the factory slide cut.
Specs
Pros
Cons
My hands-on notes
The biggest advantage is how low the optic sits. Factory-height sights co-witness naturally without suppressor-height replacements. Parallax shift is minimal at realistic handgun distances and the low optical axis helps maintain a natural presentation.
The lens carries a slight green tint but remains exceptionally clear. Window distortion is minimal around the edges. Because there is no external battery compartment, the housing feels compact and streamlined.
Button controls are tactile enough for gloved use, though most shooters will leave the optic in automatic mode. Recoil management on the Glock 17 is excellent and the optic tracks smoothly through rapid-fire strings.
What people say online
Most shooters praise the seamless Glock integration and appreciate avoiding MOS plate issues. Reliability reports have been overwhelmingly positive.
Mounting clarity
Direct mount to Glock MOS slide. No adapter plate required.
Trijicon RMR Type 2
The RMR Type 2 remains the benchmark by which many pistol optics are measured. Its reputation was built through years of hard duty use.
Specs
Pros
Cons
My hands-on notes
The RMR’s housing shape helps it survive abuse that destroys lesser optics. During rapid-fire testing, the dot remained stable and easy to track. Parallax performance is excellent for a pistol optic.
The blue lens tint is noticeable but rarely distracting. Button tactility is positive even with gloves. Emitter occlusion remains the primary limitation of any open-emitter design during severe weather.
Despite newer competitors offering larger windows, the RMR remains incredibly efficient once the shooter develops a consistent draw stroke.
What people say online
Many law enforcement agencies and professional users still consider the RMR the gold standard for duty applications.
Mounting clarity
Requires an RMR-compatible MOS adapter plate.
Aimpoint ACRO P-2
The ACRO P-2 brought enclosed-emitter durability to the handgun world and has become a preferred choice for serious duty users.
Specs
Pros
Cons
My hands-on notes
The enclosed design prevents snow, mud, rain, and lint from blocking the emitter. That advantage becomes immediately obvious in harsh environments.
The battery compartment design is one of the best available because batteries can be replaced without disturbing zero. Window clarity is excellent and distortion remains minimal. Button feel is firm and deliberate.
Parallax shift is well controlled and the optic handles recoil exceptionally well. The slightly taller deck height can make co-witnessing more challenging compared to the SCS.
What people say online
Professional users consistently praise the optic's reliability and weather resistance.
Mounting clarity
Requires an ACRO-compatible MOS plate.
Holosun 507C
The Holosun 507C continues to offer one of the strongest feature sets available at its price point.
Specs
Pros
Cons
My hands-on notes
The side-loading battery tray is extremely convenient because zero remains unchanged during battery replacement. Controls are easy to operate while wearing gloves.
The reticle options allow shooters to select a simple dot or circle-dot combination. Window distortion is minimal. Recoil handling on the Glock 17 MOS is excellent and the optic consistently returns to target during rapid transitions.
Parallax performance compares favorably to more expensive optics. The emitter remains exposed, so debris can occasionally become a concern in adverse conditions.
What people say online
The 507C is frequently recommended as the sweet spot between performance, features, and affordability.
Mounting clarity
Want to print your doc?
This is not the way.
This is not the way.
Try clicking the ··· in the right corner or using a keyboard shortcut (
CtrlP
) instead.