The 6 Best Red Dot Sights for Glock 19 mos is one of the most versatile and widely used handguns on the market, valued by law enforcement, military personnel, competitive shooters, and concealed carriers alike. Adding a high-quality red dot sight can take its performance to the next level, offering faster target acquisition, improved accuracy, and greater confidence in both defensive and competitive shooting scenarios.
The MOS (Modular Optics System) platform makes it easy to mount a wide variety of optics, but with so many options available, choosing the right red dot can be overwhelming. From rugged, enclosed emitters built for extreme environments to wide-window reflex sights designed for lightning-fast transitions, the 6 Best Red Dot Sights for Glock 19 MOS depend on your specific needs, preferences, and shooting style.
6 Best Red Dot Sights for Glock 19 mos
1. HOLOSUN HE507C-GR X2
The HOLOSUN HE507C-GR X2 is a high-performance open reflex sight purpose-built for full-sized pistol applications, making it an outstanding match for the Glock 19 Gen 5. Engineered with Holosun’s Green Super LED technology, it delivers a sharp and vibrant green reticle that is easier for many shooters to see in varying light conditions compared to traditional red. The reticle options include a precise 2 MOA dot, a quick-acquisition 32 MOA circle, or a combination of both, allowing you to tailor the sight picture to your shooting style.
One of the standout features is Holosun’s Lock Mode, which prevents accidental button presses—a useful safeguard for concealed carry or when drawing from a holster. Battery management is exceptional, with a side-loading CR1632 battery tray for hassle-free changes, and a battery life of up to 50,000 hours.
The Shake Awake technology automatically powers down the LED during inactivity and instantly reactivates it with minimal movement, extending battery longevity without compromising readiness.
The Solar Failsafe system ensures that your optic remains operational even if the battery dies, harnessing ambient light to power the reticle. This also works in Auto Mode to adjust brightness automatically based on lighting conditions, ensuring optimal reticle visibility whether you’re shooting in bright sunlight or dim indoor ranges. The housing is made from 7075-T6 aluminum, known for its strength and durability, and is finished with a protective anodized coating for added resilience.
From a technical perspective, the HE507C-GR X2 offers parallax-free performance, unlimited eye relief, and precise adjustments at 1 MOA per click with a ±50 MOA travel range, making zeroing straightforward. With a compact window size of 0.63×0.91 inches, it balances quick target acquisition with minimal bulk, ideal for a defensive carry pistol like the Glock 19 Gen 5.
Pros
- Long battery life (up to 50,000 hours) with Shake Awake technology
- Solar Failsafe backup for battery redundancy and auto-brightness adjustment
- Durable 7075-T6 aluminum housing with anodized finish
- Lock Mode prevents accidental adjustments during carry or use
- Side-loading battery tray for quick, tool-less battery changes
- Parallax-free with unlimited eye relief for fast target acquisition
Cons
- Higher price point compared to entry-level pistol optics
2. Trijicon RMR Type 2 3.25 MOA Adjustable LED Red Dot Sight
The Trijicon RMR Type 2 3.25 MOA Adjustable LED Red Dot Sight has earned a legendary reputation for ruggedness, reliability, and versatility, making it a premium choice for the Glock 19 Gen 5. Its patented housing shape is designed to absorb and redirect impact forces away from the lens, dramatically increasing durability in harsh conditions.
This toughness, combined with redesigned and upgraded electronics built to withstand the recoil of slide-mounted pistols, ensures that the RMR Type 2 performs flawlessly in military, law enforcement, self-defense, competition, and hunting applications.
What truly sets the RMR Type 2 apart is its user-friendly adjustable LED system. Large, tactile side buttons allow you to easily control brightness levels, switch between manual and automatic modes, and power down the sight for storage.
In manual mode, the optic stays in your chosen brightness setting for 16.5 hours before defaulting back to automatic mode, ensuring it’s always mission-ready. The automatic mode uses an ambient light sensor to adjust the dot’s brightness to match environmental lighting, while the lock-out feature prevents accidental changes, ideal for carry or operational use.
The 3.25 MOA dot in the RM06 model strikes the perfect balance between precision and speed. It’s small enough for accurate shots at extended distances but still large enough for quick target acquisition in close quarters.
Additionally, the RMR Type 2 is night vision compatible, making it a highly adaptable optic across different lighting conditions. Its proven track record in the most demanding environments makes it a reliable upgrade for Glock 19 Gen 5 owners who need uncompromising performance.
Pros
- Extremely durable, patented housing design that protects the lens from impacts
- Upgraded electronics optimized for slide-mounted pistol recoil
- 3.25 MOA dot offers the perfect balance between speed and precision
- Manual and automatic brightness modes with intuitive side controls
- Lock-out function to prevent accidental brightness changes
- Night vision compatible for tactical versatility
- Widely trusted by military, law enforcement, and professional shooters
Cons
- Requires a specific RMR footprint mounting plate for Glock MOS compatibility
3. Leupold DeltaPoint Pro
The Leupold DeltaPoint Pro stands out as a premier optic for Glock 19 Gen 5 owners who demand lightning-fast target acquisition and uncompromising durability. Originally designed for competitive speed shooting and personal defense, this newest model features a bold 6 MOA red dot that excels at rapid, close-range engagement. The larger dot makes it incredibly easy to pick up under stress, enhancing accuracy when split-second reactions matter most.
One of the DeltaPoint Pro’s most impressive features is its exceptionally wide field of view and crystal-clear glass, which combine to deliver one of the cleanest sight pictures in the industry. Whether you’re engaging a moving target or transitioning between multiple threats, the expansive window gives you unmatched situational awareness. The optic is built with a rugged aluminum housing and a protective steel sheath, ensuring reliable performance even in punishing conditions.
Practicality is another strong point. The easy-access top-loading battery compartment means you can replace the battery without removing the sight, eliminating the need to re-zero afterward. Precision shooters will also appreciate the click-adjustment system, allowing for fine-tuned windage and elevation control. While it pairs perfectly with pistols like the Glock 19 Gen 5, its versatility extends to AR-platform rifles, shotguns, and more, making it a true multi-role optic.
Proudly designed, machined, and assembled in the USA, the DeltaPoint Pro carries Leupold’s lifetime guarantee, giving shooters peace of mind that their investment will last for years of use in both training and real-world scenarios. Its combination of speed, clarity, and ruggedness makes it a top contender for anyone seeking a red dot that delivers professional-grade performance.
Pros
- Large 6 MOA red dot for lightning-fast target acquisition
- Wide field of view with crystal-clear glass for superior situational awareness
- Rugged aluminum housing with steel sheath for extreme durability
- Top-loading battery compartment for quick changes without re-zeroing
- Precision click-adjustments for windage and elevation
- Versatile works on pistols, rifles, and shotguns
- Designed, machined, and assembled in the USA with a lifetime guarantee
Cons
- A larger dot may be less suited for long-range precision
4. Aimpoint ACRO™ P-2 Red Dot Reflex Sight 3.5 MOA
The Aimpoint ACRO™ P-2 brings unmatched durability and reliability to the red dot market, making it an ideal choice for Glock 19 Gen 5 owners who want professional-grade performance. As the second-generation model in Aimpoint’s ACRO series, it features an improved LED emitter and a higher-capacity CR2032 battery, delivering an extraordinary five years (50,000 hours) of constant-on operation. This means you can leave it powered up at all times, confident it will be ready whenever you need it, whether for personal defense, duty use, or competition.
The ACRO P-2 stands out for its fully enclosed optical channel, which was a groundbreaking innovation when the original ACRO was released. This design completely seals the LED emitter, shielding it from dirt, moisture, and debris problems that can plague open-emitter optics. The result is a sight that maintains consistent performance in any weather or environment, from torrential rain to dusty ranges.
Durability is at the heart of the ACRO P-2’s design. Engineered to withstand extreme G-forces, it has been extensively tested to handle the shock, vibration, temperature extremes, and material stresses demanded by elite military and law enforcement users. Whether mounted on a pistol slide, rifle, or shotgun, it holds zero and keeps working without compromise.
With its 3.5 MOA red dot, the ACRO P-2 strikes an excellent balance between precision and speed, allowing for accurate shot placement at distance while remaining quick to acquire in close-quarters situations. This combination of enclosed-emitter reliability, extended battery life, and combat-proven toughness makes it one of the most dependable red dot options for the Glock 19 Gen 5.
Pros
- Fully enclosed emitter design keeps debris, dust, and moisture out
- Five-year battery life (50,000 hours) with constant-on capability
- 3.5 MOA dot balances speed and precision
- Designed to withstand extreme G-forces and harsh environmental conditions
- Tested and proven for professional military and law enforcement use
- Maintains zero under heavy recoil and continuous slide cycling
Cons
- None
5. Swampfox Justice Micro Reflex Red Dot Sights
The Swampfox Justice II Micro Reflex Red Dot Sight delivers competition-level performance in a package that’s equally at home on a Glock 19 Gen 5. Built for speed and versatility, the Justice II boasts a generous 30mm window, one of the largest in its class, offering a wide, unobstructed field of view for faster target acquisition and enhanced situational awareness.
Its modern body design is optimized for both durability and aesthetics, and with its universal RMR footprint, it mounts seamlessly to the Glock MOS platform using the appropriate plate.
Shooters can customize their aiming experience with three variants: a red or green 6 MOA dot for fast sight pickup or the new multi-reticle model featuring four easily switchable reticle options. This flexibility makes the Justice II suitable for everything from USPSA stages to 3-Gun competitions, while also being a viable option for personal defense. With 10 illumination settings, the dot remains visible in any lighting, from bright midday sun to low-light indoor ranges.
The Justice II uses Swampfox’s proven Shake ‘N Wake technology, automatically powering the sight on with movement and off during inactivity to conserve battery life. The optic is housed in rugged 7075-T6 aluminum with an enhanced hood design that protects the larger, recessed lens from damage, ensuring reliable performance even during aggressive competition use.
Pros
- Large 30mm window for superior field of view and faster target acquisition
- Choice of red or green 6 MOA dot or multi-reticle model with four reticle options
- 10 illumination settings for all lighting conditions
- Shake ‘N Wake auto on/off to extend battery life
- RMR footprint for wide mounting compatibility, including Glock MOS
- Durable 7075-T6 aluminum construction with enhanced protective hood
- Ideal for both competition and defensive use
Cons
- 6 MOA dot less suited for long-range precision shooting
6. HOLOSUN HE509T X2 Reflex Pistol Sight
The Holosun HE509T-GR X2 is a premium enclosed reflex sight built for shooters who demand maximum durability and performance from their Glock 19 Gen 5. Constructed from Grade 5 titanium, this optic offers an exceptional strength-to-weight ratio, making it more than capable of enduring heavy recoil, hard impacts, and extreme environmental conditions.
It’s fully nitrogen-purged housing ensures fog-free performance, while the RMR footprint adapter plate makes mounting to Glock MOS platforms straightforward and secure.
Featuring a green Super LED with a staggering 50,000-hour battery life, the 509T X2 offers 12 brightness settings (10 daylight + 2 night vision), allowing you to adapt to any lighting condition. The enclosed emitter design keeps dust, debris, and water from interfering with the lens, making it a go-to choice for duty, defense, and harsh outdoor use.
The Holosun’s Multi-Reticle System (MRS) gives shooters the choice between a precision 2 MOA dot for longer-range accuracy or a 32 MOA circle with a 2 MOA dot for lightning-fast close-range engagements. This flexibility makes it equally effective for competition stages, defensive scenarios, or target shooting. The Shake Awake technology automatically powers down the optic after inactivity and instantly reactivates it with movement, customizable to your preferred timeout setting.
Adding to its resilience, the 509T X2 includes Solar Failsafe technology, ensuring you still have a usable reticle if your battery runs out, provided there’s available light. This feature also enables auto-brightness adjustment in Auto Mode, giving you optimal reticle visibility without manual input.
Overall, the Holosun 509T X2 combines battle-ready construction, versatile reticle options, and advanced power management into one of the most rugged and feature-rich red dots available for the Glock 19 Gen 5.
Pros
- Grade 5 titanium housing for unmatched durability
- Enclosed emitter design keeps debris and moisture off the lens
- Multi-Reticle System: switch between a 2 MOA dot and a 32 MOA circle + dot
- 50,000-hour battery life with Shake Awake power-saving feature
- Solar Failsafe as a backup power source with auto-brightness
- RMR footprint adapter plate included for Glock MOS compatibility
- 12 brightness settings, including 2 night vision-compatible modes
Cons
- Enclosed design offers a smaller window than the large competition-style sight
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Factors to consider when choosing the 6 Best Red Dot Sights for Glock 19 MOS
Durability and Build Quality
Your Glock 19 Gen 5 is built to withstand heavy use, so your optic should match that level of resilience. Look for red dots with rugged housings—materials like 7075-T6 aluminum or Grade 5 titanium provide excellent strength-to-weight ratios. Enclosed emitter designs, like those found in the Aimpoint ACRO P-2 or Holosun 509T X2, protect the LED and lens from dirt, moisture, and impacts, making them ideal for duty, defense, and adverse environments. Shock resistance is crucial, as slide-mounted optics must endure constant recoil forces.
Reticle Options and Size
The reticle size and style affect how quickly you can acquire targets and how precisely you can shoot. A smaller dot size (e.g., 2–3.5 MOA) offers more precision for longer distances, while larger dots (e.g., 6 MOA) excel in rapid, close-range engagements. Some optics, like the Holosun 509T X2, offer multi-reticle systems with both a precision dot and a large circle-dot combination, giving you flexibility based on the shooting scenario. Choosing the right reticle depends on whether your priority is speed, accuracy, or a balance of both.
Battery Life
A long-lasting battery ensures your red dot is always ready. Models like the Aimpoint ACRO P-2 and Holosun 509T X2 offer up to 50,000 hours of operation, meaning years of use before a battery change. Advanced features like Shake Awake or auto-off timers help conserve power, while solar failsafe systems can keep the optic running even if the battery dies. Side-loading battery trays or top-access compartments, such as those on the Leupold DeltaPoint Pro, make changing batteries easier without losing your zero.
Brightness Settings
An optic’s brightness range determines how well it adapts to varying light conditions. For outdoor shooting in bright sunlight, you’ll need higher daylight settings; for indoor ranges or low-light scenarios, dimmer settings prevent reticle bloom. If you use night vision gear, ensure your optic has NV-compatible settings, like the Trijicon RMR Type 2 or Holosun 509T X2. The ability to fine-tune brightness manually or switch to auto-adjust mode lets you adapt quickly to changing environments.
Window Size and Field of View
A larger sight window makes it easier to acquire and track your target, especially in dynamic shooting situations. For example, the Swampfox Justice II’s 30mm window offers an expansive field of view, while more compact enclosed designs like the ACRO P-2 trade window size for maximum protection. Consider your intended use competition shooters often prefer larger windows for speed, while duty and concealed carry users may favor more compact, durable housings that balance visibility with concealability.
Mounting Compatibility
The 6 Best Red Dot Sights for Glock 19 mos comes with a modular optics system, but you’ll still need to match your optic’s footprint or use an adapter plate. Popular footprints include RMR, Deltapoint Pro, and ACRO, each with different mounting profiles. Some optics, like the Holosun 509T X2, come with RMR footprint adapter plates included, while others may require separate purchases. Ensuring proper fit not only makes installation smoother but also enhances stability and prevents zero shift over time.
FAQs of the 6 Best Red Dot Sights for Glock 19 mos
- What size MOA dot is best for a Glock 19 Gen 5?
The ideal MOA size depends on your shooting needs. Smaller dots (2–3.5 MOA) offer more precision for longer-range shots, making them great for target shooting and duty use. Larger dots (6 MOA) are faster to acquire at close range, which is ideal for defensive scenarios or competitive speed shooting. Some optics offer multi-reticle systems so you can switch between a small dot, a large circle, or both, depending on the situation.
- Do I need an enclosed emitter red dot for my Glock 19 Gen 5?
Not necessarily, but enclosed emitter designs—like the Aimpoint ACRO P-2 or Holosun 509T X2—offer better protection against dirt, water, and debris. This makes them more reliable in harsh weather or dirty environments. Open emitter optics tend to have larger sight windows and lighter weight, which many competition and range shooters prefer.
- How important is battery life in a handgun red dot?
Battery life is crucial for defensive or duty use, where your optic must be ready at all times. Some red dots, like the Trijicon RMR Type 2 and Aimpoint ACRO P-2, offer 50,000 hours (5 years) of continuous operation. Features like Shake Awake, auto-off, and solar backup can further extend runtime and provide peace of mind if the battery unexpectedly runs low.
- Will any red dot fit the Glock 19 Gen 5 MOS?
The 6 Best Red Dot Sights for Glock 19 mos come with a modular optics system and adapter plates, but not every optic will mount directly without an adapter. Red dots use different footprints, such as RMR, DeltaPoint Pro, or ACRO, so you’ll need to match your optic’s mounting pattern with the correct plate. Always verify compatibility before purchasing to ensure a secure fit and reliable zero retention.
Conclusion
In conclusion, the 6 Best Red Dot Sights for Glock 19 mos ultimately comes down to your intended use, preferred reticle style, and desired balance between speed and precision. Models like the Trijicon RMR Type 2 and Aimpoint ACRO P-2 excel in rugged duty performance, while options such as the Leupold DeltaPoint Pro and Swampfox Justice II shine in competition settings with their expansive sight windows.