The Glock 17 Gen 5 MOS is one of the most popular optics-ready pistols available, and pairing it with the best red dot sight can dramatically improve speed, accuracy, and overall shooting performance. A quality red dot allows for faster target acquisition, better visibility in different lighting conditions, and quicker follow-up shots, making it an excellent upgrade for self-defense, competition, duty use, and range training.
In this guide, we’ll explore the key features that make a red dot ideal for the Glock 17 Gen 5 MOS, highlight some of the top optic choices available, discuss important factors to consider before buying, and answer common FAQs to help you choose the right sight for your needs. Whether you’re a first-time red dot user or an experienced shooter looking to upgrade your setup, this article will help you find the best optic for your Glock 17 Gen 5 MOS.
Best Red Dot for Glock 17 Gen 5 Mos
1)Holosun HS507C-X2
The Holosun HS507C X2 is an outstanding red dot sight for the Glock 17 Gen 5 MOS, offering an excellent balance of durability, precision, and innovative technology. Since it shares the popular Trijicon RMR footprint, it mounts directly to many Glock MOS setups with the appropriate MOS plate, while also fitting firearms designed for the Holosun 407C, 507C, and RMR footprint. Its compact size and lightweight construction make it an excellent choice for concealed carry, duty use, home defense, and competitive shooting.
One of the most impressive aspects of this optic is the ACSS Vulcan reticle. Instead of relying on a traditional red dot, it uses a patented 10 MOA center chevron combined with a large outer reference circle that helps guide the shooter’s eye toward the aiming point during presentation. This design makes it much easier for new and experienced shooters to quickly find the reticle, especially during rapid target transitions. Those who prefer a cleaner sight picture can disable the outer reference circle and use only the center chevron.
The sight also delivers an exceptionally clear viewing experience. Its multicoated glass increases light transmission while reducing glare, resulting in a bright and sharp sight picture. Combined with 12 brightness settings, shooters can easily adjust the reticle for bright daylight, overcast conditions, or low light environments. This versatility makes the optic dependable in nearly any shooting situation.
Durability is another reason the HS507C X2 ranks among the best red dots for the Glock 17 Gen 5 MOS. The housing is machined from 7075 T6 aluminum, one of the strongest aluminum alloys used in firearm optics. The black hardcoat anodized finish provides excellent resistance against scratches, corrosion, and everyday wear while maintaining a lightweight design of only 1.5 ounces. This keeps the pistol well balanced without adding unnecessary bulk.
Battery efficiency is equally impressive. Shake Awake technology automatically activates the optic when movement is detected and powers it down during inactivity, significantly extending battery life. On a medium brightness setting, the sight can operate for up to 20,000 hours, reducing the need for frequent battery replacements while ensuring it is ready whenever needed.
The HS507C X2 also includes Solar Failsafe, which uses an integrated solar panel to supplement battery power in bright environments. This not only helps extend battery life but also provides an additional layer of reliability by keeping the reticle illuminated when adequate ambient light is available. For shooters who demand dependable performance under varying conditions, this feature adds valuable peace of mind.
Holosun further supports the optic with a limited lifetime warranty, giving buyers added confidence in their investment. When combined with its durable construction, innovative reticle, dependable battery management, and crystal clear glass, the HS507C X2 stands out as one of the most capable red dot sights available for the Glock 17 Gen 5 MOS.
Pros
- ACSS Vulcan chevron reticle allows faster target acquisition
- Large reference circle helps quickly locate the aiming point
- Outer reference circle can be turned off for a cleaner sight picture
- Multicoated glass provides excellent clarity and light transmission
- Twelve brightness settings for different lighting conditions
- Strong 7075 T6 aluminum construction
- Lightweight design adds minimal weight to the pistol
- Shake Awake technology extends battery life
- Solar Failsafe provides supplemental power in bright conditions
- Limited lifetime warranty offers long term confidence
Cons
- ACSS chevron reticle may require an adjustment period for shooters accustomed to traditional dots
2)HOLOSUN HE508T X2 Multi-Reticle 2 MOA Dot
The HOLOSUN HE508T X2 Multi Reticle 2 MOA Dot is one of the best red dot sights for the Glock 17 Gen 5 MOS, especially for shooters who demand exceptional durability and dependable performance. Built with a premium Grade 5 titanium housing, this optic is designed to withstand heavy use while remaining lightweight enough for everyday carry, duty, home defense, and competition. Its industry standard footprint also makes it compatible with Glock MOS pistols using the appropriate mounting plate.
The optic features Holosun’s Multi Reticle System, giving shooters the flexibility to choose the aiming pattern that best suits their needs. Users can select a 2 MOA green dot, a 32 MOA circle, or a combination of both. The larger circle helps the eye quickly locate the reticle during rapid presentations while also serving as a useful reference for close range shooting. When greater precision is required, the circle can be turned off to leave only the crisp 2 MOA aiming dot.
The 540nm Green Super LED offers excellent visibility across a wide range of lighting conditions. Many shooters find the green reticle easier to see in bright daylight, making target acquisition faster and more comfortable. The optic includes 10 daylight brightness settings along with 2 night vision compatible settings, allowing it to perform equally well in bright outdoor environments and low light conditions.
Battery efficiency is another major advantage. Powered by a CR1632 battery, the HE508T X2 delivers up to 50,000 hours of runtime under normal use. Shake Awake technology further extends battery life by automatically placing the optic into sleep mode when it remains still and instantly reactivating it with the slightest movement. Users can customize the sleep timer or disable the feature entirely according to their preferences.
For added reliability, the optic includes Solar Failsafe technology. When operating in Auto Mode, the integrated solar panel automatically adjusts reticle brightness based on surrounding light conditions while also serving as a backup power source if the battery becomes depleted. This extra level of redundancy helps ensure the optic remains operational when it matters most.
Performance is equally impressive thanks to its 1x magnification, parallax free design, and unlimited eye relief, allowing shooters to maintain rapid target focus without worrying about eye position. The generous viewing window provides a clear field of view, while precise 1 MOA windage and elevation adjustments make zeroing straightforward. Combined with its rugged titanium construction and advanced electronic features, the HE508T X2 is an excellent premium optic for the Glock 17 Gen 5 MOS.
Pros
- Grade 5 titanium housing offers exceptional strength and durability
- Multi Reticle System provides three reticle options for different shooting styles
- Bright green reticle is easy to see in daylight
- Up to 50,000 hours of battery life
- Shake Awake technology conserves battery power
- Solar Failsafe provides backup power and automatic brightness adjustment
- Large viewing window supports quick target acquisition
- Night vision compatible brightness settings
- Parallax free design with unlimited eye relief
- Suitable for concealed carry, duty, competition, and defensive use
Cons
- Premium titanium construction comes with a higher price
3)HOLOSUN 407C/507C-X3 Series, 2 MOA Dot
The HOLOSUN 407C/507C X3 Series is an excellent choice for anyone looking for one of the best red dot sights for the Glock 17 Gen 5 MOS. Available in several configurations, including 2 MOA dot, Multi Reticle System, and red, green, or gold reticle options, this series gives shooters the flexibility to choose an optic that matches their shooting style and visual preference. Whether the pistol is used for concealed carry, home defense, range practice, or competition, there is a model designed to meet those needs.
One of the biggest advantages of the X3 Series is its RMR footprint compatibility. This allows the optic to fit a wide variety of pistols that accept the popular RMR mounting pattern, including the Glock 17 Gen 5 MOS when paired with the correct MOS plate. The secure mounting system provides confidence that the optic will remain properly aligned even after extended shooting sessions.
The series offers two reticle configurations to suit different applications. The 407C models feature a precise 2 MOA dot that delivers excellent accuracy for deliberate shots at varying distances. The 507C models include Holosun’s Multi Reticle System, allowing users to switch between a 2 MOA dot, a 32 MOA circle, or a combination of both. The larger circle helps speed up target acquisition during close range shooting, while the dot alone provides a cleaner aiming point for greater precision.
Visibility remains excellent in changing light thanks to the forward facing photodiode and Solar Failsafe technology. The optic automatically adjusts reticle brightness when operating in automatic mode, ensuring the reticle remains easy to see without constant manual adjustments. Solar Failsafe also provides additional reliability by supplementing battery power in bright environments.
For shooters who prefer complete control, the X3 Series includes manual brightness adjustment with 12 brightness settings. Users can select the exact intensity needed for bright sunlight, indoor ranges, or low light conditions. The optic also features lockout mode, preventing accidental button presses from changing settings, while memory mode recalls the previously selected brightness level each time the optic is activated.
Durability is another reason this series performs so well on the Glock 17 Gen 5 MOS. With an IP67 waterproof rating, the optic is protected against rain, dust, and temporary water immersion. It is also tested to withstand 5000G of vibration, allowing it to handle the repeated recoil of thousands of rounds while maintaining reliable performance.
The combination of multiple reticle choices, dependable durability, flexible brightness controls, and proven RMR compatibility makes the HOLOSUN 407C/507C X3 Series one of the most versatile red dot options available for Glock owners seeking speed, accuracy, and long term reliability.
Pros
- Available with red, green, and gold reticle options
- Multiple models allow shooters to choose between a 2 MOA dot or Multi Reticle System
- RMR footprint fits many popular pistol platforms
- Solar Failsafe automatically adjusts brightness in changing light
- Twelve brightness settings for various environments
- Lockout mode prevents accidental setting changes
- Memory mode recalls previous brightness setting
- IP67 waterproof construction provides reliable weather resistance
- Built to withstand up to 5000G of recoil and vibration
- Excellent choice for defensive, competitive, and recreational shooting
Cons
- Requires the correct MOS mounting plate for Glock 17 Gen 5 MOS installation
4)OSIGHT XE AMRS Enclosed Red Dot Sight 2/6 MOA Dot
The OSIGHT XE AMRS Enclosed Red Dot Sight is a feature rich optic that earns its place among the best red dot sights for the Glock 17 Gen 5 MOS. Designed with an enclosed emitter, it provides greater protection against rain, dust, mud, and debris than traditional open emitter designs. Built on the widely used 407C and 507C footprint, it is compatible with the Glock 17 Gen 5 MOS when paired with the correct MOS mounting plate, making it an excellent option for duty use, home defense, competitive shooting, and everyday carry.
One of the biggest strengths of this optic is its highly versatile multi reticle system. Shooters can switch between a 2 MOA dot, 6 MOA dot, 2 MOA dot with a 32 MOA circle, 6 MOA dot with a 32 MOA circle, or a 32 MOA circle only. This wide selection allows users to customize the sight picture for different shooting situations. The smaller 2 MOA dot provides greater precision for longer shots, while the larger 6 MOA dot offers faster acquisition during close range engagements. The circle reticle further improves speed by naturally guiding the eye toward the aiming point.
Battery maintenance is simple thanks to the side loading battery compartment. Unlike optics that require removal from the slide for battery replacement, this design allows users to change the battery without removing the optic or disturbing the existing zero. This saves time and eliminates the need to re zero the sight after every battery change.
The optic also introduces an innovative collapsible backup rear sight. If the optic loses power or the battery is depleted, a quick press of the pop up button deploys the integrated rear sight, providing an immediate alternative aiming solution. This built in backup system adds another layer of reliability for shooters who depend on their handgun in demanding situations.
Optical performance is equally impressive. The aspherical lens produces a sharp, distortion free image while maintaining parallax free performance for accurate shooting. The clear viewing window allows for fast target acquisition, helping shooters stay focused on the target rather than the optic.
The OSIGHT XE AMRS also incorporates motion activation technology, automatically turning the optic on when movement is detected and powering it down after three minutes of inactivity to conserve battery life. A low power indicator further improves reliability by flashing the reticle once per minute when battery voltage falls below the recommended level, giving users ample warning before battery replacement becomes necessary.
With its enclosed emitter construction, multiple reticle choices, side loading battery, innovative backup sight, and clear optical performance, the OSIGHT XE AMRS offers an impressive combination of durability, convenience, and versatility for Glock 17 Gen 5 MOS owners.
Pros
- Enclosed emitter provides excellent protection from dust, water, and debris
- Compatible with the popular 407C and 507C footprint
- Five reticle configurations suit different shooting styles
- Side loading battery allows replacement without removing the optic
- Integrated collapsible backup rear sight adds extra reliability
- Aspherical lens delivers excellent clarity with minimal distortion
- Motion activation helps extend battery life
- Low battery warning provides timely replacement reminders
- Suitable for defensive, competition, and recreational shooting
- Durable design built for demanding environments
Cons
- Requires the correct MOS mounting plate for Glock 17 Gen 5 MOS installation
5)Leupold DeltaPoint Pro Reflex Sight
The Leupold DeltaPoint Pro Reflex Sight is one of the best red dot sights for the Glock 17 Gen 5 MOS, offering premium optical performance, rugged durability, and dependable reliability for both professional and recreational shooters. Designed with speed and precision in mind, this optic provides a crisp 2.5 MOA illuminated red dot that allows for rapid target acquisition while maintaining excellent accuracy at varying distances. Its robust construction and compatibility with MOS platforms make it a trusted option for concealed carry, home defense, range use, and competition shooting.
One of the biggest advantages of the DeltaPoint Pro is Leupold’s Professional Grade Red Dot Optical System. It delivers exceptional light transmission, making the sight picture bright and easy to see in a wide range of lighting conditions. Whether shooting in bright daylight or low light environments, the optic produces a sharp, clear image with impressive resolution. It also minimizes glare effectively, helping maintain visibility when facing harsh sunlight or reflective surfaces. This optical quality gives shooters greater confidence when acquiring and tracking targets.
The 2.5 MOA illuminated reticle offers an excellent balance between speed and precision. The dot is small enough for accurate shot placement while remaining highly visible for fast target transitions. This makes it well suited for defensive use as well as competitive shooting where both accuracy and quick follow up shots are important. The illuminated reticle also enhances visibility during dawn, dusk, or indoor shooting conditions.
Battery efficiency is another area where the DeltaPoint Pro excels. It features Motion Sensor Technology (MST), which automatically turns off the illuminated reticle after five minutes of inactivity to conserve battery power. The optic instantly powers back on as soon as movement is detected, ensuring it is always ready when needed without requiring manual activation. This intelligent feature helps maximize battery life while maintaining readiness for defensive situations.
Durability is equally impressive. The DeltaPoint Pro is machined, designed, and assembled in the USA using premium materials built to withstand demanding environments. It is 100 percent waterproof, fogproof, and shockproof, allowing it to perform reliably through rain, humidity, extreme temperatures, and repeated recoil from thousands of rounds. Combined with Leupold’s outstanding customer support, the sight provides long term reliability and peace of mind for Glock owners.
Pros
- Exceptional optical clarity with excellent light transmission
- Crisp 2.5 MOA illuminated dot for fast and accurate aiming
- Effective glare reduction in bright lighting conditions
- Motion Sensor Technology extends battery life automatically
- Waterproof, fogproof, and shockproof construction
- Designed, machined, and assembled in the USA
- Compatible with Glock 17 Gen 5 MOS mounting system
- Backed by Leupold’s highly respected customer care
Cons
- Premium price compared to many competing red dot sights
6)Vortex Defender-ST Micro Dot
The Vortex Defender-ST Micro Dot Sight is one of the best red dot sights for the Glock 17 Gen 5 MOS, combining durability, fast target acquisition, and impressive battery performance in a compact package. Built on the DeltaPoint Pro footprint, it mounts easily to many Glock MOS configurations with the proper adapter plate, making it an excellent choice for everyday carry, competition shooting, home defense, and recreational range use. Its versatile design also allows it to transition seamlessly between pistols and other compatible firearms.
The Defender-ST features a large viewing window that makes acquiring the dot faster while maintaining an unobstructed field of view. Compared to the Defender-CCW, the larger window provides greater confidence when drawing and engaging targets quickly. The hard coated aspherical lens delivers a distortion free sight picture with excellent clarity and more natural color reproduction, allowing shooters to maintain better visual awareness and improved accuracy in a variety of lighting conditions.
Visibility is another strength of this optic. The Defender-ST includes a green dot reticle with 12 brightness settings, making it easy to adapt to bright daylight, indoor ranges, or low light environments. The crisp aiming point remains easy to track during rapid target transitions while offering the precision needed for accurate shot placement. Whether used for defensive applications or competitive shooting, the adjustable brightness ensures the reticle remains clearly visible.
Convenience and battery efficiency are equally impressive. The optic automatically activates when motion is detected, ensuring it is ready whenever the firearm is picked up. A 10 minute auto shutoff conserves battery life when the sight is not in use, while button lockout mode prevents accidental changes to brightness settings during daily carry or storage. Powered by a CR2032 battery, the Defender-ST delivers an impressive runtime of up to 25,000 hours at brightness setting 6, providing long lasting reliability with minimal maintenance.
Durability is another reason the Defender-ST ranks among the best optics for the Glock 17 Gen 5 MOS. It is waterproof, shockproof, and protected by ArmorTek lens coating, which helps resist scratches, dirt, and oil. The ShockShield polymer insert adds another layer of impact protection for demanding daily use, while the Fast Rack textured front face provides additional grip for one handed slide manipulation when necessary. These features make the Defender-ST a dependable optic capable of handling harsh environments and heavy use.
Pros
- Large viewing window allows faster target acquisition
- Hard coated aspherical lens delivers a clear, distortion free sight picture
- Twelve brightness settings adapt to a wide range of lighting conditions
- Motion activation provides instant readiness
- Ten minute auto shutoff helps conserve battery life
- Excellent battery life of up to 25,000 hours
- Fast Rack textured front face assists with slide manipulation
- Waterproof and shockproof construction for dependable durability
- ArmorTek lens coating protects against scratches and debris
- ShockShield polymer insert increases impact resistance
- DeltaPoint Pro footprint offers broad mounting compatibility
Cons
- Adapter plate may be required for some Glock 17 Gen 5 MOS setups
You may also like to read 8 Best Red Dot Sight for Glock 17
Best Red Dot for Glock 17 Gen 5 Mos Advantages
Faster Target Acquisition
A quality red dot sight allows shooters to find and engage targets much faster than traditional iron sights. Instead of aligning the front and rear sights before taking a shot, you simply place the illuminated dot on the target. This speeds up sight alignment, making it easier to react in defensive situations, competitive matches, or dynamic range drills where every fraction of a second matters.
Improved Shooting Accuracy
Red dot sights help improve accuracy by providing a precise aiming point that is easier to see and maintain on the target. A small, crisp dot allows for consistent shot placement at both close and extended distances. This can be especially beneficial for new shooters who are still developing their marksmanship skills, as well as experienced users seeking tighter shot groups.
Better Performance in Low Light
Many modern red dot sights feature illuminated reticles with adjustable brightness levels, making them highly effective in dim lighting conditions. Whether shooting indoors, during early morning hours, or at dusk, the illuminated aiming point remains visible without obscuring the target. This improves confidence and accuracy when lighting conditions are less than ideal.
Wider Field of View
Unlike traditional iron sights that can partially block the target, red dot optics provide a more open sight picture. A larger viewing window allows shooters to maintain greater awareness of their surroundings while tracking moving targets more effectively. This wider field of view can improve reaction time and overall shooting performance.
Faster Follow Up Shots
Because the illuminated dot remains easy to track during recoil, shooters can quickly reacquire their sight picture after each shot. This results in faster follow up shots and smoother target transitions, which is particularly valuable in competitive shooting, self defense scenarios, and training exercises involving multiple targets.
Reduced Eye Strain
Red dot sights allow shooters to focus on the target rather than shifting focus between the front sight, rear sight, and target. This more natural aiming process reduces eye fatigue during extended practice sessions and makes shooting more comfortable, especially for individuals who have difficulty focusing on traditional iron sights.
Long Battery Life and Smart Power Management
Many premium optics offer excellent battery efficiency through features such as motion activation and automatic shutoff. These technologies help conserve battery power while ensuring the optic is ready when the firearm is picked up. Long battery life reduces maintenance and provides greater peace of mind for users who rely on their pistol for personal protection.
Exceptional Durability
High quality red dot sights are built to withstand demanding conditions. Many are waterproof, fogproof, and shockproof, allowing them to perform reliably in rain, dust, extreme temperatures, and under repeated recoil. Durable construction ensures consistent performance whether the pistol is used for everyday carry, professional duty, or outdoor adventures.
Easy Compatibility with the Glock 17 Gen 5 MOS
The Modular Optic System design makes it simple to mount compatible red dot sights using the appropriate adapter plate. This eliminates the need for custom slide machining and gives owners the flexibility to choose from a wide range of proven optics while maintaining a secure and reliable mounting system.
Greater Confidence in Defensive Situations
A dependable red dot sight can increase confidence by enabling quicker sight alignment, more accurate shot placement, and faster engagement under stress. The combination of clear optics, durable construction, and dependable performance helps shooters stay focused on the target and respond effectively when it matters most.
Factors to Consider When Choosing the Best Red Dot for Glock 17 Gen 5 MOS
1. Optic Footprint and MOS Compatibility
The first factor to consider is whether the red dot sight is compatible with the Glock 17 Gen 5 MOS mounting system. Different optics use different mounting footprints, and some may require an adapter plate for proper installation. Choosing an optic that fits securely ensures a stable mounting platform, maintains zero under recoil, and provides reliable performance over time.
2. Reticle Size and Visibility
The size of the aiming dot plays a significant role in shooting performance. Smaller dots generally offer greater precision for longer distance shots, while larger dots are easier to locate during rapid target acquisition. It is also important to choose an optic with a bright, crisp reticle that remains easy to see in both bright sunlight and low light conditions without appearing blurry or distorted.
3. Window Size and Field of View
A larger viewing window makes it easier to locate the dot quickly and track moving targets. It also improves situational awareness by allowing shooters to see more of their surroundings while aiming. A generous field of view is especially beneficial for defensive shooting, competition, and any scenario requiring quick target transitions.
4. Battery Life and Power Management
Battery life is an important consideration for both convenience and reliability. An optic with a long battery runtime reduces the need for frequent battery replacements and ensures the sight remains ready when needed. Features such as motion activation and automatic shutoff further extend battery life by conserving power when the firearm is not in use while instantly reactivating the optic when movement is detected.
5. Durability and Build Quality
A red dot sight should be built to withstand repeated recoil, harsh weather, and everyday use. Look for models that are waterproof, fogproof, and shock resistant to ensure dependable performance in a variety of environments. High quality materials and protective lens coatings also improve long term durability by resisting scratches, impacts, dirt, and moisture.
6. Optical Clarity
Clear, high quality glass makes it easier to identify targets and maintain accuracy. A good optic should provide excellent light transmission, minimal glare, and a distortion free sight picture with natural color reproduction. Better optical clarity reduces eye strain and helps shooters maintain a clear view of both the target and the illuminated reticle in different lighting conditions.
7. Ease of Operation
The best red dot sights are simple to operate under stress. Brightness controls should be intuitive and easy to access, while features such as button lockout prevent accidental setting changes during carry or training. An optic that allows quick adjustments without unnecessary complexity enables shooters to stay focused on the target rather than the sight itself.
8. Intended Use and Shooting Style
Before making a purchase, consider how the optic will primarily be used. Some shooters prioritize a lightweight design for everyday carry, while others may prefer a larger window for competition or enhanced durability for duty and home defense. Selecting a red dot that matches your intended application ensures you get the best balance of size, weight, performance, and reliability for your specific shooting needs.
Best Red Dot for Glock 17 Gen 5 MOS FAQs
1. Can I mount any red dot sight on a Glock 17 Gen 5 MOS?
No. Although the Glock 17 Gen 5 MOS is designed to accept optics, not every red dot sight mounts directly to the slide. Different optics use different mounting footprints, so some require a compatible adapter plate for proper installation. Always verify compatibility before purchasing to ensure a secure fit and reliable performance.
2. What dot size is best for a Glock 17 Gen 5 MOS?
The ideal dot size depends on how you plan to use your pistol. Smaller dots provide greater precision for longer distance shooting, while larger dots are generally quicker to acquire during close range engagements. Many shooters find that a medium sized dot offers an excellent balance between speed and accuracy for everyday carry, home defense, and range use.
3. Are red dot sights worth it for the Glock 17 Gen 5 MOS?
Yes. A quality red dot sight can significantly improve target acquisition, shooting accuracy, and follow up shot speed. It also performs well in varying lighting conditions and allows shooters to focus on the target instead of aligning traditional iron sights. These advantages make a red dot a worthwhile upgrade for self defense, competition, training, and recreational shooting.
Conclusion
Choosing the best red dot for the Glock 17 Gen 5 MOS comes down to finding an optic that matches your shooting style, intended use, and performance expectations. The best options combine fast target acquisition, clear optics, durable construction, long battery life, and reliable mounting compatibility to help you shoot with greater confidence and accuracy.
Whether you need an optic for everyday carry, home defense, competitive shooting, or range practice, investing in a high quality red dot can significantly enhance your overall shooting experience. By considering factors such as reticle size, window clarity, durability, battery performance, and ease of use, you can confidently select a red dot sight that delivers dependable performance and long lasting value on your Glock 17 Gen 5 MOS.