Upgrading your Glock 19 MOS with a reliable red dot sight can dramatically improve your shooting speed, accuracy, and target acquisition—whether you’re at the range, carrying for self-defense, or in competitive scenarios. Among the top optic manufacturers today, Holosun has built a strong reputation for offering rugged, feature-rich red dots that combine advanced technology with real-world reliability.
From extended battery life and Shake Awake technology to Solar Failsafe and multi-reticle systems, Holosun red dots offer exceptional performance without breaking the bank. Whether you’re looking for the rugged titanium durability of the 508T, the versatility of the 507C, or the simplicity of the 407C or 407K, there’s a Holosun optic that pairs seamlessly with your Glock 19 MOS slide.
In this guide, we’ll break down the best Holosun red dot sights for Glock 19 MOS, helping you choose the perfect model based on footprint compatibility, reticle options, durability, and user-friendly features.
What is Glock 19 Mos ?
The Glock 19 MOS (Modular Optic System) is a factory optics-ready version of the popular Glock 19 pistol. It features a specially milled slide that allows shooters to easily mount a variety of red dot sights using interchangeable adapter plates. Designed for versatility, the Glock 19 MOS combines the compact size and reliability of the standard Glock 19 with enhanced capability for faster target acquisition and improved accuracy through reflex optics. This makes it an ideal choice for concealed carry, home defense, and competitive shooting.
6 Best Holosun Red Dots for Glock 19 MOS
1.Holosun SCS‑MOS
The Holosun SCS-MOS (Solar Charging Sight) is an innovative reflex optic built specifically for full-sized Glock MOS pistols. What sets this model apart is its adapter-free mounting system, solar-powered rechargeable battery, and automatic brightness control, making it a sleek and virtually maintenance-free red dot for duty, competition, or defensive carry. Designed for Glock users who value a clean slide profile and cutting-edge technology, the SCS-MOS integrates directly into the MOS cut, offering seamless compatibility without extra hardware.
Built from titanium and featuring Holosun’s green Multi-Reticle System, this optic delivers excellent clarity and adaptability in any lighting condition. With a powerful internal battery charged through a multidirectional solar panel, the SCS-MOS offers the possibility of unlimited battery life. It’s the ultimate “set it and forget it” sight—perfect for shooters who want long-term reliability without frequent battery swaps. Please note: the SCS-MOS is not compatible with Glock 43X MOS or Glock 48 MOS models. Users of those platforms should look at Holosun’s “K” series or “EPS Carry” optics.
Product Features
Direct MOS Mounting
Unlike many optics that require a mounting plate, the SCS-MOS is designed to mount directly onto full-sized Glock MOS slides. This ensures a lower profile, more secure fit, and cleaner sight picture without adding extra height or bulk.
Solar Charging System with Auto Brightness
The SCS-MOS uses an internal rechargeable battery that’s constantly powered by Holosun’s solar charging system. Multi-directional sensors detect lighting conditions and adjust brightness automatically. In optimal use, this system allows the sight to run indefinitely without manual charging.
Intensity Override and Low Power Indicator
When needed, the override mode locks the sight into high brightness for 30 minutes—ideal for high-glare outdoor environments. It also features a low power indicator that alerts you several days in advance before the battery needs charging—removing guesswork and ensuring constant readiness.
Multi-Reticle System (MRS)
This sight includes Holosun’s signature MRS, offering three reticle options:
- 2 MOA Dot Only for precision
- 32 MOA Ring Only for rapid acquisition
- 2 MOA Dot + 32 MOA Ring for fast and flexible shooting
The large circle offers an intuitive frame of reference while helping shooters center the 2 MOA dot quickly on target.
Multilayer Reflective Glass
The lens is made from optical-quality glass with advanced coatings that improve light transmission, reduce glare, and enhance battery efficiency. This results in clear, crisp reticle visibility and extended optic lifespan even in harsh lighting.
Specifications
- Reticle: Green 2 MOA Dot & 32 MOA Circle
- Light Wavelength: 540nm
- Magnification: 1x (Parallax-free)
- Eye Relief: Unlimited
- Power Source: Solar & Internal Rechargeable Battery
- Battery Life: Unlimited with solar use
- Brightness Control: Automatic with override mode
- Window Size: 0.58 x 0.77 inches
- Housing Material: Titanium
- Adjustment per Click: 1 MOA
- W&E Travel Range: ±30 MOA
Pros
- No adapter plate needed—mounts directly to Glock MOS
- Rechargeable internal battery with solar charging for near-unlimited life
- Auto-adjusting brightness with override for high-glare environments
- Durable titanium housing for superior strength and lightweight feel
- Multi-Reticle System offers fast target acquisition and precision
- Crisp glass with reflective coatings for superior visibility
Cons
- Brightness is auto-adjust only (no manual adjustment in standard use)
2.Holosun HE507C‑GR X2 / HS507C‑X2
The Holosun HE507C-GR X2 / HS507C-X2 stands as one of the most advanced and reliable open reflex sights available for full-sized pistols. Built for shooters who demand speed, precision, and ruggedness, this optic combines Holosun’s cutting-edge Green Super LED technology with a highly durable 7075 aluminum housing, delivering a feature-rich platform ideal for self-defense, duty, or competitive use.
Designed to mount on standard RMR footprint slides, the 507C X2 series comes with a side-mounted battery tray, eliminating the need to remove the optic when swapping out the CR1632 battery. With up to 50,000 hours of battery life, plus Shake Awake and Solar Failsafe technologies, this optic is engineered for true set-it-and-forget-it convenience. Whether you’re training hard or carrying daily, the HE507C-GR X2 won’t slow you down.
Product Features
Green Super LED with Multi-Reticle System (MRS)
This optic features a green illuminated reticle, offering superior visibility in various lighting conditions. The Multi-Reticle System (MRS) gives users the flexibility to switch between a 2 MOA dot, a 32 MOA circle, or a combination of both. This allows you to adapt your sight picture for close-quarters speed or pinpoint accuracy at distance.
Shake Awake Technology
Holosun’s Shake Awake conserves battery by automatically deactivating the LED after a set period of inactivity (10 minutes to 12 hours). Once movement is detected, the sight instantly powers back on—so it’s always ready when you draw. This feature can also be disabled for continuous operation if desired.
Solar Failsafe Power System
Even if the battery runs low, the Solar Failsafe provides a secondary power source using ambient light. It automatically adjusts the reticle brightness depending on your environment—brighter in daylight, dimmer in dark settings. This feature ensures your reticle stays visible without manual adjustments.
Lock Mode and Side Battery Tray
The addition of Lock Mode prevents accidental brightness or reticle changes by locking out the buttons—ideal for concealed or duty carry. The side-loading battery compartment lets you replace the CR1632 cell without removing the optic or disturbing your zero, making maintenance quick and easy.
Rugged 7075-T6 Aluminum Housing
Crafted from 7075 T6 aluminum, the sight offers a strong and lightweight frame with an anodized finish that resists corrosion and wear. This high-grade material is more durable than standard 6061 aluminum used in many competitor models, making it better suited for heavy use and harsh environments.
Specifications
- Reticle: Green 2 MOA Dot & 32 MOA Circle
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Light Wavelength: 540nm
- Brightness Settings: 10 Daylight & 2 Night Vision Compatible
- Power Source: Solar & CR1632 Battery
- Battery Life: Up to 50,000 hours
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Hard Anodized
- Adjustment Per Click: 1 MOA
- Windage/Elevation Travel Range: ±50 MOA
- Window Size: 0.63 x 0.91 inches
Pros
- Three reticle options for flexibility and quick target acquisition
- Solar and battery-powered with automatic brightness adjustment
- Shake Awake conserves energy and keeps the sight ready to use
- Rugged 7075 aluminum housing with a durable anodized finish
- Side-mounted battery tray allows for tool-free replacement
- Lock Mode prevents accidental setting changes during carry or recoil
Cons
- Slightly bulkier than micro red dots (not ideal for subcompact pistols)
3.Holosun HE507K‑GR X2 / HS507K‑X2
The Holosun HE507K-GR X2 / HS507K-X2 is purpose-built for subcompact pistols, offering advanced red dot technology in a rugged, compact form factor. Designed especially for concealed carry and micro-compact pistols like the Sig Sauer P365X/XL, this green dot sight combines Holosun’s hallmark features—Shake Awake, Multi-Reticle System, and extended battery life—into a sleek optic that doesn’t compromise performance for size.
Unlike full-sized red dots, the 507K X2 series uses Holosun’s proprietary “K” footprint and sits lower on the slide for optimal co-witnessing and faster presentation. With a 7075-T6 aluminum housing, side-loading CR1632 battery, and a choice of reticle styles, it’s a refined and reliable sight for everyday carry. Note that slides with a four-boss interface will require an adapter plate for proper installation.
Product Features
Green Super LED with Multi-Reticle System (MRS)
The optic features a green 2 MOA dot and 32 MOA circle, offering fast target acquisition and flexible aiming. With the MRS, you can toggle between:
- 2 MOA Dot Only – best for precision shots
- 32 MOA Circle Only – fast acquisition in close range
- 2 MOA Dot + 32 MOA Circle – ideal for versatile shooting scenarios
The large circle aids rapid centering, while the smaller dot allows pinpoint accuracy.
Shake Awake Technology
To conserve power, Shake Awake powers down the sight after a chosen period of inactivity (between 10 minutes to 12 hours). A light touch or movement instantly brings it back to life, ensuring the sight is always ready without wasting battery life. This feature can also be turned off completely.
Lock Mode and Side Battery Tray
The Lock Mode prevents accidental brightness changes by locking the control buttons—a key advantage for concealed carry or rigorous movement. The side-loading battery compartment makes it easy to replace the CR1632 cell without removing the sight or disturbing your zero.
Durable Aluminum Housing for Subcompact Pistols
Made from 7075-T6 aluminum, the 507K X2 is both lightweight and impact-resistant, tailored for the compact profile of modern carry guns. Its anodized finish resists corrosion and abrasions, extending the optic’s operational lifespan even in harsh environments.
Specifications
- Reticle: Green 2 MOA Dot & 32 MOA Circle
- Magnification: 1x (Parallax-free)
- Eye Relief: Unlimited
- Light Wavelength: 540nm
- Brightness Settings: 10 Daylight & 2 Night Vision
- Power Source: Battery Only
- Battery Type: CR1632 (Side-Loading Tray)
- Battery Life: Up to 50,000 hours
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Hard Anodized
- Window Size: 0.58 x 0.77 inches
- Adjustment per Click: 1 MOA
- Windage/Elevation Travel Range: ±30 MOA
Pros
- Compact design ideal for subcompact pistols like P365X/XL
- Multi-Reticle System enhances speed and accuracy
- Long 50,000-hour battery life with Shake Awake
- Lock Mode prevents accidental setting changes
- Tough 7075 aluminum housing with anodized finish
- Easy battery replacement via side tray
Cons
- Requires adapter plate for some four-boss interface slides
4.Holosun HE508T‑GR X2 / HS508T‑X2
For shooters seeking an ultra-durable, feature-rich reflex sight for handgun use, the Holosun HE508T-GR X2 / HS508T-X2 stands out as a top-tier option. Built around a Grade 5 titanium housing, this optic is engineered to survive the harshest conditions while delivering exceptional reliability, precision, and visibility. Whether you’re carrying on duty, training hard, or competing at a high level, this sight is built to endure.
Holosun has packed this model with its best-in-class technology, including the Multi-Reticle System, Shake Awake, and Solar Failsafe, making it a robust and versatile optic for serious handgun applications. With a standard RMR footprint, it’s also easy to mount on most modern handguns equipped for optics.
Product Features
Titanium Housing for Extreme Durability
Unlike standard aluminum optics, the 508T X2 is housed in Grade 5 titanium, offering superior strength-to-weight ratio, corrosion resistance, and impact resilience. This makes it ideal for users who demand the highest level of durability without adding unnecessary bulk.
Green Super LED with Multi-Reticle System (MRS)
The 540nm Green Super LED provides exceptional brightness and clarity, with a crisp, highly visible reticle. You can toggle between three reticle modes:
- 2 MOA Dot Only – excellent for precise aiming
- 32 MOA Circle Only – ideal for close-quarters speed
- 2 MOA Dot + 32 MOA Circle – combines both for fast acquisition and hold-over reference
This flexibility lets you tailor the reticle to your specific shooting style or scenario.
Shake Awake Technology
Holosun’s Shake Awake automatically shuts down the LED during periods of inactivity (from 10 minutes to 12 hours), and instantly reactivates it with the slightest motion. This ensures your optic is always ready while conserving battery life, which is rated up to 50,000 hours on a CR1632 battery.
Solar Failsafe for Redundancy
If your battery runs low, Solar Failsafe keeps the optic powered using ambient light. In Auto Mode, it also adjusts the reticle brightness based on lighting conditions—brighter in the sun, dimmer indoors—giving you an optimal aiming point at all times.
Lock Mode for Secure Settings
To prevent accidental button presses, Lock Mode disables brightness and reticle adjustment controls until manually unlocked. This is especially helpful for carry, competition, or tactical use where consistent settings are critical.
Specifications
- Reticle: Green 2 MOA Dot & 32 MOA Circle
- Light Wavelength: 540nm
- Magnification: 1x (Parallax-free)
- Eye Relief: Unlimited
- Power Source: Solar & Battery
- Battery Type: CR1632 (Side-Loading)
- Battery Life: Up to 50,000 hours
- Brightness Settings: 10 Daylight + 2 Night Vision
- Window Size: 0.63 x 0.91 inches
- Housing Material: Grade 5 Titanium
- Adjustment per Click: 1 MOA
- Windage/Elevation Travel Range: ±50 MOA
Pros
- Titanium construction offers maximum durability and corrosion resistance
- Multi-Reticle System allows for fast or precision aiming
- Solar Failsafe ensures backup power and automatic brightness control
- Shake Awake maximizes battery life and responsiveness
- Lock Mode protects settings from accidental changes
- Compatible with standard RMR footprints for broad handgun compatibility
Cons
- Slightly heavier than aluminum models
5.Holosun HE407C‑GR X2 / HS407C‑X2
The Holosun HE407C-GR X2 / HS407C-X2 is a streamlined open reflex sight designed for full-sized pistols, delivering simplicity, ruggedness, and high performance. With its large field of view, precise 2 MOA green dot, and proven Holosun technology like Shake Awake and Solar Failsafe, this model is ideal for shooters who want a no-frills, highly reliable optic for defensive, duty, or range use.
Engineered around the standard RMR footprint, the 407C-GR X2 mounts easily to a wide range of handguns. Its 7075-T6 aluminum housing ensures it can handle the bumps and recoil of real-world use, while the side-mounted CR1632 battery offers up to 50,000 hours of operation, minimizing downtime and maintenance.
Product Features
Green Super LED with Precision 2 MOA Dot
At the heart of the optic is Holosun’s 540nm Green Super LED, known for excellent brightness and energy efficiency. The 2 MOA dot provides a clear, fine aiming point that’s easy to see in various lighting conditions, making it ideal for both fast target acquisition and precise shots at distance.
Large Field of View for Faster Targeting
With a window size of 0.63 x 0.91 inches, this optic offers a generous viewing area that makes it easier to track targets and reacquire your dot under stress. The open reflex design provides a clean sight picture and rapid follow-up capability.
Shake Awake Technology
To preserve battery life, Holosun’s Shake Awake system powers the sight down after a preset period of inactivity (adjustable from 10 minutes to 12 hours). The moment movement is detected, the dot springs back to life—ensuring your sight is always ready without draining power unnecessarily.
Solar Failsafe for Reliable Power
The integrated solar panel acts as a secondary power source and also enables Auto Mode for automatic brightness adjustment. This feature ensures optimal visibility without requiring manual tuning—especially useful in changing light environments. In a battery failure, ambient light keeps the sight operational.
Lock Mode and Side Battery Tray
Lock Mode prevents unintentional adjustments during carry or recoil by disabling the brightness control buttons. The side-loading battery tray lets you change the CR1632 battery without removing the sight or losing your zero—quick, easy, and field-ready.
Specifications
- Reticle: Green 2 MOA Dot
- Magnification: 1x (Parallax-free)
- Eye Relief: Unlimited
- Light Wavelength: 540nm
- Brightness Settings: 10 Daylight & 2 Night Vision Compatible
- Power Source: Solar + CR1632 Battery
- Battery Life: Up to 50,000 hours
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Anodized
- Window Size: 0.63 x 0.91 inches
- Adjustment per Click: 1 MOA
- Windage/Elevation Travel Range: ±50 MOA
Pros
- Precision 2 MOA dot for fast and accurate shooting
- Large viewing window enhances target acquisition
- Solar Failsafe provides backup power and auto-brightness
- Shake Awake conserves battery and ensures instant activation
- Lock Mode prevents accidental changes during use
- Rugged aluminum construction with a standard RMR footprint
Cons
- Manual brightness adjustment required if Auto Mode is off
6.Holosun HS407K X2
Compact, efficient, and purpose-built, the Holosun HS407K X2 is a top-tier red dot optic designed specifically for subcompact pistols like the Sig Sauer P365X/XL. With a crisp 6 MOA red dot, long battery life, and rugged construction, it delivers quick target acquisition and dependable performance in a slim profile tailored for everyday carry.
Perfect for users who prioritize simplicity and speed, the HS407K X2 maintains all the essential features without extra complexity. Built on Holosun’s “K” footprint, it mounts directly to compatible slides and offers a no-nonsense setup for concealed carriers and minimalist shooters alike. Note: some slides with a four-boss interface may require an adapter plate.
Product Features
Bright 6 MOA Red Dot for Rapid Targeting
The 6 MOA red dot is highly visible and designed for speed—making it ideal for close-quarters self-defense and fast follow-up shots. Larger than the standard 2 MOA dot, it’s easier to pick up quickly, especially under stress or in low-light situations.
Red Super LED & Extended Battery Life
Holosun’s Red Super LED operates efficiently to deliver up to 50,000 hours of battery life from a single CR1632 battery. Combined with 12 brightness settings (10 for daylight and 2 for night vision), the reticle remains visible in a wide range of environments and lighting conditions.
Shake Awake Technology
The built-in Shake Awake system helps extend battery life by powering down the optic after inactivity (user-programmable from 10 minutes to 12 hours). The slightest movement reactivates the red dot instantly, ensuring it’s always ready when you draw your firearm.
Lock Mode and Side Battery Tray
Lock Mode prevents unintentional changes by disabling button inputs—ideal for daily carry or high-movement situations. The side-mounted battery tray allows you to replace the battery without removing the sight or re-zeroing, streamlining maintenance.
Multilayer Reflective Glass for Superior Clarity
This optic features optical-grade glass with advanced multilayer coatings that increase light transmission and reduce glare. These coatings not only improve visibility but also contribute to the optic’s overall battery efficiency and lens durability.
Specifications
- Reticle: 6 MOA Red Dot
- Light Wavelength: 650nm
- Magnification: 1x (Parallax-free)
- Eye Relief: Unlimited
- Brightness Settings: 10 Daylight + 2 Night Vision
- Power Source: CR1632 Battery (Side Tray)
- Battery Life: Up to 50,000 hours
- Window Size: 0.58 x 0.77 inches
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Hard Anodized
- Adjustment per Click: 1.5 MOA
- Windage & Elevation Travel Range: ±30 MOA
Pros
- Large 6 MOA dot is easy to acquire quickly
- Long battery life with Shake Awake for efficient power use
- Durable aluminum housing with corrosion-resistant finish
- Lock Mode prevents accidental setting changes during carry
- Side battery tray allows for quick battery swaps
- Compact size perfect for subcompact pistols like the P365 series
Cons
- Fixed 6 MOA dot only (no multi-reticle option)
Also Read : 5 Best Red Dot Sights for Glock 45 Mos
Factors to consider when choosing the best Best Holosun Red Dots for Glock 19 MOS
1. Footprint Compatibility
Ensure the Holosun optic has an RMR-compatible footprint, which is standard for the Glock 19 MOS platform. Most Holosun models like the 507C, 508T, and 407C fit without an adapter, but others (e.g., “K” series) may require a mounting plate or adapter.
2. Reticle Type (Dot Size & Multi-Reticle System)
Holosun offers different dot sizes and reticle options:
- 2 MOA dot is ideal for precision shooting.
- 6 MOA dot allows faster acquisition for self-defense.
- Multi-Reticle System (MRS) models offer a 2 MOA dot, 32 MOA circle, or both—great for versatility across distances.
3. Window Size and Sight Picture
A larger window (like in the 507C or 508T) provides a broader field of view, which helps with faster target acquisition and tracking. For competition or defensive use, a wide window is preferable.
4. Power Source and Battery Life
Look for models with:
- Solar Failsafe (for backup power from ambient light).
- Shake Awake technology to conserve energy.
- Long battery life (up to 50,000 hours on many Holosun models).
Also, consider the battery access—side-mounted trays (like on the 507C X2) allow battery changes without removing the optic.
5. Housing Material and Durability
Holosun red dots come in either:
- 7075-T6 aluminum (e.g., 507C, 407C) – lightweight and rugged.
- Grade 5 titanium (e.g., 508T) – extremely durable, premium option.
If you carry daily or shoot in tough environments, titanium may be worth the investment.
Best Holosun Red Dots for Glock 19 MOS: FAQS
1. Are Holosun red dots compatible with Glock 19 MOS out of the box?
Some Holosun red dots, like the 507C, 508T, and 407C, have an RMR footprint that fits the Glock 19 MOS directly using the appropriate MOS adapter plate. Others, such as the 507K or 407K, require a conversion plate or aftermarket slide due to their proprietary “K” footprint.
2. Which Holosun model is best for concealed carry with a Glock 19 MOS?
The Holosun 507C X2 is a top choice for concealed carry due to its compact size, Shake Awake, and Lock Mode features. It offers a good balance of ruggedness and versatility with the Multi-Reticle System (MRS).
3. What dot size should I choose for my Glock 19 MOS?
It depends on your needs:
- 2 MOA dot (e.g., 507C, 407C) is best for precision.
- 6 MOA dot (e.g., 407K) is easier to acquire quickly under stress, ideal for self-defense.
4. How long do the batteries last in Holosun red dots?
Most Holosun red dots, including the 507C and 508T, offer up to 50,000 hours of battery life with Shake Awake. Models with Solar Failsafe can run even longer under good lighting conditions.
Conclusion
When it comes to enhancing your Glock 19 MOS with a high-performance red dot sight, Holosun stands out as a top-tier choice for reliability, innovation, and value. Whether you’re focused on concealed carry, competitive shooting, or defensive readiness, there’s a Holosun model that fits your specific needs.
For versatility and feature-rich performance, the Holosun 507C X2 offers a superb Multi-Reticle System, Shake Awake, and Solar Failsafe. If extreme durability is your priority, the 508T X2’s titanium housing is hard to beat. For those who prefer simplicity with a larger dot, the 407C or 407K delivers speed and clarity in a more streamlined package.
Ultimately, the best Holosun red dot for your Glock 19 MOS depends on your use case and personal preference—but you can count on Holosun optics to deliver rugged construction, long battery life, and fast target acquisition in any environment.