Finding the best Holosun for Glock 19 Gen 5 MOS can significantly improve your shooting accuracy, speed, and overall confidence. Holosun offers a wide range of red dot sights that are built to withstand rigorous use while providing a clear and responsive aiming point.
These optics come equipped with features like long battery life, motion-activated power, solar backup, and multiple reticle options. Whether you’re a beginner looking to upgrade your factory setup or an experienced shooter seeking a more refined optic, the right Holosun model can elevate your Glock’s performance in any setting, be it concealed carry, home defense, range work, or duty use.
About the Glock 19 Gen 5 MOS
The Glock 19 Gen 5 MOS (Modular Optic System) is a highly adaptable 9mm handgun designed for shooters who want the benefits of a red dot without extensive modifications. It features a factory-milled slide that accepts various optics through interchangeable mounting plates, eliminating the need for aftermarket cuts.
This optic-ready design offers flexibility and convenience for users who want to upgrade their sight system while preserving factory reliability.
This fifth-generation model brings several upgrades over previous versions. It features the Glock Marksman Barrel (GMB) for enhanced accuracy, an ambidextrous slide stop lever, and a flared magazine well for faster reloads. Glock also removed the finger grooves from the grip, allowing for a more universal and comfortable fit.
The trigger system has been slightly revised for a smoother pull, and the nDLC finish enhances corrosion and wear resistance.
Its 15-round standard capacity, compatibility with Glock’s accessory ecosystem, and optic-ready slide make it a strong foundation for those looking to mount a compact, durable red dot sight. Matching it with the right Holosun optic maximizes its performance capabilities.
Best Holosun for Glock 19 Gen 5 MOS
1) Holosun HS507C-X2 Red Dot Sight
The Holosun HS507C-X2 stands out as one of the best Holosun optics for the Glock 19 Gen 5 MOS, offering a refined blend of durability, innovation, and adaptability. As a third-generation model in the 507C lineup, the X2 brings meaningful improvements that directly benefit Glock 19 users,especially those who value speed, accuracy, and versatility in dynamic shooting conditions.
Designed with a 1x magnification and 2 MOA red dot, this optic is ideal for close-to-medium range use. Whether you’re on the range or in a defensive setting, it provides rapid target acquisition and exceptional clarity.
The multi-coated glass ensures crisp visuals across varied lighting conditions, while unlimited eye relief makes shooting comfortable and instinctive, regardless of your stance or eye position.
One of the biggest upgrades over its predecessors is the addition of Lock Mode, a user-focused enhancement that prevents accidental button presses.
Combined with the redesigned ergonomic button layout, the HS507C-X2 is easier to operate under pressure. It also supports Shake Awake technology, which automatically activates the optic when motion is detected, conserving battery life without sacrificing readiness.
This red dot is exceptionally power-efficient, with up to 50,000 hours of battery life depending on brightness settings. The side-mounted CR1632 battery tray allows for easy replacement without removing the optic, ensuring zero retention and less downtime. Holosun’s Solar Failsafe system adds another layer of reliability, keeping the optic powered even when the battery fails.
Shooters have access to 12 brightness levels, including 2 night vision-compatible modes, and a multi-reticle system that lets you switch between a 2 MOA dot, a 32 MOA circle, or a combination of both.
The ACSS Vulcan reticle variant includes a large outer circle for improved aiming feedback,especially beneficial for new red dot users or when shooting from unconventional positions.
Crafted from rugged 7075-T6 aluminum with a hardcoat anodized finish, the HS507C-X2 weighs only 1.5 oz yet maintains an IP67 water resistance rating, making it durable enough for harsh environments.
The optic fits an RMR footprint, making it directly compatible with the Glock 19 Gen 5 MOS with the appropriate mounting plate (note: mount not included).
Pros
- Crisp 2 MOA red dot with multi-reticle system (dot, circle, or both)
- Extremely long battery life (up to 50,000 hours)
- Lock Mode prevents unintentional adjustments
- Shake Awake and Solar Failsafe features for reliability
- Side battery access for convenience
- Night vision compatible brightness settings
- Premium aluminum housing with IP67 water resistance
- Fits RMR footprint; ideal for Glock 19 Gen 5 MOS
Cons
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Requires Glock MOS plate
2) Holosun HS407C X2 Red Dot Sight
The Holosun HS407C X2 is a compelling option for Glock 19 Gen 5 MOS users looking to enhance their aiming performance with a high-efficiency green dot sight. Compact, durable, and built with premium materials, this optic delivers a sharp 2 MOA dot powered by Holosun’s energy-efficient green Super LED,a great alternative for shooters who have trouble picking up red reticles or prefer a brighter aiming point in daytime conditions.
Constructed from 7075-T6 aluminum with a rugged anodized finish, the sight is lightweight at just 1.5 oz but engineered for durability, with IP67 water resistance and a wide operating temperature range.
The 0.63×0.91 in window offers a generous field of view while remaining compact on the slide of a Glock 19. Multilayer coatings on the lens provide a clear, high-contrast sight picture across all lighting environments.
This model features Shake Awake technology, which automatically powers the optic on when movement is detected and conserves energy when idle.
Combined with the Solar Failsafe system, you can remain confident in your optic’s power source even if the battery runs out. Speaking of battery life, the HE407C-GR-X2 boasts up to 50,000 hours of use on a single CR1632 battery, accessible via a side tray for easy replacement.
Shooters can choose from 12 brightness settings, including 2 that are night vision compatible, giving you control over your reticle visibility regardless of ambient light conditions.
The fixed 1x magnification ensures fast target acquisition in close to mid-range shooting, ideal for both self-defense and range training applications.
Designed with the RMR footprint, this optic is compatible with the Glock 19 Gen 5 MOS when used with the proper mounting plate (note: mount not included).
Whether you’re upgrading from iron sights or replacing an older red dot, the HE407C-GR-X2 provides a clean, minimalist solution without sacrificing performance or battery longevity.
Pros
- Green Super LED offers excellent brightness and visibility
- Up to 50,000 hours of battery life with Shake Awake
- Solar Failsafe ensures backup power under any condition
- 12 brightness settings, including 2 night vision compatible
- Multicoated glass delivers a sharp, clear image
- Lightweight and durable 7075-T6 aluminum housing
- Side battery tray for easy replacement
- RMR footprint fits Glock 19 Gen 5 MOS
Cons
-
Requires a separate Glock MOS adapter plate
3) HOLOSUN HE509T X2 Reflex Pistol Sight
The Holosun HE509T X2 stands as a premium enclosed red dot optic that pairs exceptionally well with the Glock 19 Gen 5 MOS. Designed specifically for pistol applications, it offers durability, cutting-edge technology, and versatile reticle options in a compact, rugged package. For shooters who demand reliability in all environments, without compromising clarity or speed, the HE509T delivers on every front.
Unlike many open emitter designs, this optic features a fully enclosed emitter housed in CNC-machined Grade 5 titanium, making it highly resistant to dirt, moisture, and physical abuse.
With an IP67 water resistance rating, it’s built to perform in harsh conditions where open emitters might fail. Despite the enhanced protection, the optic remains lightweight at 1.72 oz, which balances well with the Glock 19 platform.
The Multi-Reticle System (MRS) allows users to switch between a 2 MOA dot, 32 MOA circle, or a combination of both, depending on their shooting context.
This flexibility makes it suitable for fast target acquisition in close-range encounters and precision shooting at longer distances. The 0.66 x 0.9 in window provides a clear field of view with multi-coated glass for excellent light transmission and reduced glare.
In terms of power, the HE509T X2 is highly efficient. It runs on a single CR1632 battery and can deliver up to 50,000 hours of operation, thanks in part to Shake Awake technology and the Solar Failsafe system.
Shake Awake activates the reticle when motion is detected, conserving battery when the weapon is idle. The solar panel adds an extra layer of insurance by automatically powering the optic in bright environments when the battery is low or depleted.
An improved Lock Mode ensures the optic remains in your preferred setting by preventing unintentional button presses. With 10 daylight and 2 night vision-compatible brightness settings, you can easily tailor the dot intensity to fit your surroundings, whether on a sunlit range or in low-light tactical situations.
It’s worth noting that the HE509T uses a proprietary footprint different from RMR-style mounts, so a specific adapter plate will be required to mount it to the Glock 19 Gen 5 MOS.
Pros
- Fully enclosed emitter protects against water, dust, and debris
- Grade 5 titanium housing offers exceptional durability without excess weight
- Multi-Reticle System (2 MOA dot, 32 MOA circle, or both) for versatile aiming
- Shake Awake and Solar Failsafe extend battery life and reliability
- Up to 50,000 hours of battery life
- Lock Mode prevents accidental adjustments
- 12 brightness settings (10 daylight, 2 night vision)
- Side battery access without removing the optic
- Excellent clarity and parallax-free viewing
Cons
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Higher cost
4) Holosun SCS MOS Sight
The Holosun SCS MOS (Solar Charging Sight) is one of the most streamlined and low-profile optics available for the Glock 19 Gen 5 MOS. Designed specifically to co-witness with standard-height Glock iron sights, this optic eliminates the need for adapter plates and offers a direct, flush-mount installation for a factory-like fit. It’s an ideal choice for shooters seeking a zero-maintenance red dot sight with modern tech and minimalist design.
This sight features a green Circle Dot reticle, which combines a precise aiming point with fast target acquisition capability. The green reticle is not only more visible to many shooters compared to red, but it also stands out well in various lighting conditions, including low light and bright daylight.
The multi-intensity LED system adjusts automatically based on ambient lighting, which means there’s no need to manually change brightness settings in changing environments.
What truly sets the SCS MOS apart is its internal rechargeable battery and solar charging system. This means you’ll never need to swap out a battery; the sight stays charged via its onboard solar panel. It offers practically unlimited battery life when exposed to ambient light and can retain a charge for long periods even in total darkness.
This solar charging capability removes one of the major points of failure in most optics: battery replacement.
Built from titanium, the SCS MOS is both incredibly lightweight at just 1.3 oz and exceptionally tough. It’s rated to operate in extreme temperatures and offers the ruggedness needed for everyday carry, duty use, or hard range sessions.
With 1 MOA adjustments, unlimited eye relief, and a 0.58 x 0.77 in window, the optic provides a clear and consistent sight picture.
One important note: the SCS is purpose-built for Glock MOS models, and it mounts directly to the slide without additional hardware. This design keeps the optic low and aligned with standard sight planes, allowing for a clean co-witness with factory sights.
Pros
- Direct-mount to Glock 19 Gen 5 MOS, no adapter plate needed
- Internal rechargeable battery with solar charging for maintenance-free operation
- Practically unlimited battery life
- Green Circle Dot reticle is highly visible and fast to acquire
- Auto-brightness adjustment adapts to lighting conditions
- Titanium housing offers excellent durability at a lightweight
- Flush-fit design allows co-witness with stock Glock sights
- Simple and intuitive operation
Cons
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No manual brightness settings
5) Holosun EPS Carry
The Holosun EPS Carry is an enclosed red dot sight that brings excellent durability, concealability, and optical clarity to compact and full-size handguns like the Glock 19 Gen 5 MOS.
Though originally designed for slim concealed-carry pistols, its robust construction and low deck height also make it a standout option for those seeking a compact, enclosed emitter solution on larger pistols.
This optic is built from 7075-T6 aluminum, a premium material known for balancing lightness and toughness. The EPS Carry weighs just 1.23 oz and is compact enough not to interfere with the balance of your Glock 19.
With a fully enclosed emitter, it protects the lens from dust, rain, and debris—an advantage over open emitter sights when carrying daily or operating in unpredictable environments.
One of the standout features of the EPS Carry is its ultra-low mounting height, which allows for co-witnessing with standard height iron sights. This removes the need for taller suppressor-height sights and ensures the optic integrates seamlessly with your factory Glock setup.
The 0.58 x 0.77 in lens provides a generous viewing window for fast target acquisition and tracking, and the aspherical glass lens ensures a clear, distortion-free image.
The sight includes Shake Awake technology, which automatically activates the dot when motion is detected and shuts it off when idle, helping stretch the 50,000-hour battery life powered by a CR1620 battery.
Brightness control is simple with tactile buttons, offering 8 daylight brightness settings, though night vision compatibility is not included in this model.
It is IPX8-rated for waterproofing, making it suitable for extreme environmental exposure. The EPS Carry uses a Holosun K-series footprint (RMS-compatible), so Glock MOS users will require an adapter plate for proper fitment.
Pros
- Fully enclosed emitter protects against moisture, dust, and debris
- Low deck height allows co-witnessing with standard Glock iron sights
- Compact, lightweight, and durable 7075-T6 aluminum construction
- Up to 50,000-hour battery life with Shake Awake and Last Setting Recall
- Clear, distortion-free aspherical lens
- Waterproof (IPX8) and suitable for daily carry
- RMS footprint with solid compatibility across compact pistols
Cons
- Lacks night vision compatibility
Next Read: 5 Best Red Dots for Glock 19 Gen 3
Factors to Consider When Buying the Best Holosun For Glock 19 Gen 5 MOS
Best Holosun For Glock 19 Gen 5 MOS FAQs
1) Do I need an adapter plate to mount a Holosun optic on my Glock 19 Gen 5 MOS?
It depends on the optic’s footprint. Some Holosun models, especially those with an RMR footprint, can be mounted using a Glock MOS adapter plate. Others, like models with a proprietary or RMS/K footprint, require a specific mounting plate. It’s important to verify compatibility before purchase to ensure a secure and proper fit.
2) What’s the benefit of a green dot versus a red dot?
Green dots tend to be more visible in daylight and can be easier to see for shooters who have difficulty with red hues. They also offer better contrast against certain backgrounds. The choice between red and green comes down to individual preference, environmental conditions, and how your eyes respond to color.
3) What is the difference between open and enclosed emitter optics?
Open emitter sights have an exposed LED that can be affected by water, debris, or dirt, potentially blocking the reticle. Enclosed emitter sights seal the LED within a housing, offering more protection and reliability in harsh conditions. Enclosed options are generally preferred for carry or duty use where exposure to elements is more likely.
Conclusion
Choosing the best Holosun for Glock 19 Gen 5 MOS comes down to matching performance with purpose. Whether you’re looking for durability, compact design, or enhanced visibility, there are optics tailored to suit your needs. Each model offers dependable accuracy, long battery life, and seamless integration with the MOS system.
Holosun optics are built for everyday carry, duty use, or range training. They deliver consistent performance and help improve speed and precision. With rugged construction and advanced features, they are a solid upgrade over standard sights.
No matter your skill level, a quality red dot sight can elevate your shooting experience. Holosun remains a trusted choice for Glock 19 Gen 5 MOS owners who want reliability, clarity, and efficiency in every shot.
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