The Glock 45 9mm is a standout among modern handguns, combining the full-size frame of the Glock 17 with the compact slide of the Glock 19. Designed for law enforcement and tactical use, it delivers exceptional balance, reliability, and shootability. But to unlock its full potential, especially in rapid target acquisition and low-light conditions adding a quality red dot sight can make all the difference. Whether you’re aiming for faster follow-up shots, improved accuracy, or simply a more intuitive aiming system, a red dot optic is a game-changer for the Glock 45 platform.
In this guide, we’ve rounded up the 9 best red dot sights compatible with the Glock 45 MOS. From rugged duty-grade options like the Trijicon RMR to versatile and budget-friendly picks like the Holosun 507C X2, each optic brings something unique to the table. Whether you’re a competitive shooter, concealed carrier, or tactical enthusiast, there’s a red dot here to elevate your performance and confidence at the range or in the field.
9 Best Red Dot for Glock 45 9mm
1.Holosun HE507C X2
The Holosun HE507C-GR X2 is a premium open reflex sight engineered specifically for full-sized pistols like the Glock 45 9mm. Built for tactical professionals, competition shooters, and serious firearm enthusiasts, it combines rugged durability with cutting-edge optical and power-saving technology. This green dot sight stands out for its clarity, flexibility, and consistent performance, making it one of the most reliable micro red dot options available for pistol platforms.
One of the HE507C-GR X2’s defining traits is its crisp green reticle, which offers enhanced visibility in bright environments and improved contrast for shooters who may struggle with red reticles due to astigmatism. The Multi-Reticle System (MRS) allows users to choose between a 2 MOA dot, a 32 MOA circle, or both. This adaptability ensures it performs well across a wide variety of shooting applications—whether you’re engaging targets at distance or needing rapid acquisition in close quarters.
It doesn’t just perform well optically—it’s built tough too. Crafted from durable 7075-T6 aluminum, the sight is made to withstand recoil, weather, and harsh field conditions. Additional features like Shake Awake, Solar Failsafe, and Lock Mode add intelligence and security, while a side-loading battery tray makes maintenance hassle-free.
Whether you’re upgrading your Glock 45 for concealed carry, home defense, or duty use, the Holosun HE507C-GR X2 offers industry-leading technology and dependable performance that more than justifies its place among the top-tier pistol optics on the market.
Key Specifications
- Reticle: 2 MOA dot & 32 MOA circle (green)
- Light Wavelength: 540nm
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: Solar & CR1632 battery
- Battery Life: Up to 50,000 hours
- Brightness Settings: 10 daylight levels & 2 night vision compatible
- Housing Material: 7075-T6 aluminum
- Surface Finish: Anodized
- Window Size: 0.63 x 0.91 inches
- Adjustment per Click: 1 MOA
- Windage & Elevation Range: ±50 MOA
- Mounting Footprint: RMR-compatible
Product Features
- Multi-Reticle Green Dot System
The HE507C-GR X2 provides a versatile aiming solution with its Multi-Reticle System (MRS), offering a 2 MOA dot, a 32 MOA circle, or both. The green LED is easier for many shooters to see in bright daylight or against cluttered backgrounds. - Shake Awake Technology
This intelligent feature extends battery life by turning the reticle off during periods of inactivity. The optic instantly reactivates with the slightest motion—ideal for duty or carry use where readiness matters. - Solar Failsafe Backup Power
The built-in solar panel powers the optic in the event of battery failure. In Auto Mode, Solar Failsafe also adjusts brightness automatically to match ambient lighting, ensuring visibility in any condition. - Lock Mode for Button Security
Prevents accidental brightness or reticle changes by locking the adjustment buttons. Particularly useful in high-stress environments or concealed carry situations where bumps can shift settings. - Side-Loading Battery Tray
The side-mounted CR1632 battery tray allows for quick battery replacement without removing the sight or losing your zero. It’s a user-friendly feature that simplifies ongoing maintenance. - Tough Aluminum Construction
The optic’s housing is made from 7075-T6 aluminum, one of the strongest materials available for lightweight weapon accessories. It’s anodized for corrosion resistance and built to endure harsh recoil and environmental exposure.
Pros
- Highly visible green reticle with MRS flexibility
- Up to 50,000-hour battery life
- Shake Awake ensures instant readiness
- Solar Failsafe provides power redundancy
- Side-loading battery design prevents zero loss
- Lock Mode adds user safety and security
- RMR footprint fits most optics-ready pistols
- Durable, lightweight aluminum construction
Cons
- Green reticle may still bloom for users with severe astigmatism
2.Trijicon RMR Type 2
The Trijicon RMR Type 2 is widely regarded as the gold standard of pistol-mounted red dot sights, trusted by military, law enforcement, and serious civilian shooters around the world. Designed for extreme durability and consistent performance under harsh conditions, this optic is built to handle real-world abuse while delivering rapid target acquisition and precision accuracy.
Short for “Ruggedized Miniature Reflex,” the RMR Type 2 improves upon its predecessor with enhanced electronics, upgraded internal components, and a redesigned battery compartment to ensure consistent operation—even under heavy recoil or in field conditions. It is engineered from forged 7075-T6 aluminum, the same material used in aircraft construction, giving it unmatched toughness without excess weight. Its patented housing design diverts stress away from the lens to increase impact resistance, and its waterproof construction is rated down to 66 feet (20 meters).
What makes the RMR Type 2 stand out even more is its simplicity and reliability. It’s available with several dot sizes, including 1.0 MOA, 3.25 MOA, and 6.5 MOA, allowing users to choose what best suits their shooting needs. The optic features manual brightness controls, automatic adjustment mode, and an impressive battery life of over 4 years on a single CR2032 battery (at setting 4).
Whether you’re outfitting a Glock 45 MOS for duty use or enhancing your concealed carry setup, the Trijicon RMR Type 2 delivers legendary performance and rugged dependability in a compact, combat-ready optic.
Key Specifications
- Reticle Options: 1.0 MOA, 3.25 MOA, or 6.5 MOA (red dot)
- Magnification: 1x (no magnification)
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: CR2032 battery
- Battery Life: Over 4 years at brightness setting 4
- Brightness Settings: 8 manually adjustable + auto mode
- Housing Material: Forged 7075-T6 aluminum
- Surface Finish: Matte black anodized
- Waterproof Depth: Up to 66 feet (20 meters)
- Adjustment per Click: 1 MOA
- W&E Travel Range: ±150 MOA
- Mounting Footprint: RMR standard
Product Features
- Legendary Durability
Built from forged 7075-T6 aluminum, the RMR Type 2 can handle drops, recoil, and environmental abuse. The unique patented housing design diverts stress away from the lens, improving resistance to impact and rough handling. - Reliable Electronics for Harsh Use
Upgraded electronics in the Type 2 model ensure consistent operation under sustained recoil, even on high-powered handguns or carbines. It’s trusted in the most demanding conditions by military and law enforcement users. - Multiple Dot Sizes
Choose from 1.0 MOA for precision, 3.25 MOA for general-purpose use, or 6.5 MOA for faster target acquisition. All options are crisp, easy to see, and perform well in varying lighting conditions. - Long Battery Life
With a single CR2032 battery, the RMR Type 2 delivers more than 4 years of runtime when used at medium brightness settings—ideal for everyday carry and extended field use. - Manual & Auto Brightness Modes
The optic includes 8 manually adjustable brightness levels and an automatic mode that adapts to ambient lighting. This flexibility allows quick adjustments during transitions between light and dark environments. - Waterproof and Weather-Resistant
With a waterproof rating of up to 66 feet (20 meters), the RMR Type 2 can handle rain, mud, and submersion without compromising performance.
Pros
- Extremely rugged and shockproof design
- Long-lasting battery (4+ years on one CR2032)
- Multiple reticle sizes to suit various applications
- Trusted by military and law enforcement worldwide
- Lightweight but highly durable forged aluminum housing
- Waterproof to 66 feet
- Compatible with most RMR-cut slides and mounts
Cons
- Battery must be removed to change (zero may be affected)
3.Trijicon SRO
The Trijicon SRO (Specialized Reflex Optic) is designed for shooters who demand speed, precision, and a wide, crystal-clear field of view. Building upon the legendary durability and reliability of the Trijicon RMR, the SRO offers enhanced usability with a larger lens, tool-less adjustments, and a streamlined interface—making it one of the most competition-friendly red dot sights on the market today. Whether you’re an experienced marksman, competitive shooter, or tactical user looking for better visibility and control, the SRO delivers.
One of the SRO’s most celebrated features is its oversized, unobstructed field of view. The large, parallax-free lens makes target acquisition incredibly fast and intuitive, especially during dynamic shooting scenarios. This is a major advantage for competitive shooters or those who need to maintain sight picture during recoil and transitions. It also co-witnesses with suppressor-height iron sights, making it ideal for pistol builds where redundancy is key.
In terms of precision, the SRO doesn’t disappoint. The crisp 2.5 MOA red dot is easy to pick up and fine-tuned for clarity, offering exceptional accuracy and fast follow-up shots. Combined with its user-friendly, tool-less windage and elevation adjustments, zeroing becomes quick and hassle-free.
The Trijicon SRO is designed to mount directly on most red-dot-ready slides and adapter plates that support the RMR footprint. Although the mount is sold separately, its broad compatibility and rugged construction make it a top-tier option for any serious shooter looking to improve their pistol performance.
Key Specifications
- Reticle: 2.5 MOA red dot
- Magnification: 1x (no magnification)
- Parallax Free: Yes
- Field of View: Extra-large and unobstructed
- Power Source: CR2032 battery
- Battery Life: Up to 3 years at setting 4
- Brightness Settings: Manual and automatic modes
- Windage & Elevation Adjustments: Tool-less
- Housing Material: 7075-T6 forged aluminum
- Mount Compatibility: RMR footprint (mount not included)
- Iron Sight Compatibility: Co-witness with suppressor-height sights
Product Features
- Large, Unobstructed Field of View
The SRO’s oversized lens gives shooters a panoramic sight picture that makes it easier to locate and track targets without losing sight alignment—even under recoil. Ideal for fast-paced shooting situations and competitive use. - Crisp 2.5 MOA Red Dot
The reticle is clear, fine-tuned, and easy to acquire. The 2.5 MOA dot strikes a perfect balance between fast target acquisition and precise shot placement, making it highly versatile across different shooting applications. - Tool-less Windage & Elevation Adjustments
Zeroing the SRO is fast and user-friendly thanks to its simple, no-tool-required adjustment system. Shooters can make changes in the field without worrying about carrying special tools. - RMR Footprint Compatibility
The SRO uses the same mounting pattern as the Trijicon RMR, making it compatible with most red-dot-ready pistol slides and adapter plates. While the mount is not included, it’s easy to integrate with many modern pistol platforms. - Suppressor-Height Sight Compatibility
The parallax-free design is also height-compatible with suppressor-ready iron sights, allowing for co-witnessing as a backup aiming solution.
Pros
- Exceptionally wide field of view for faster target tracking
- Crisp, clear 2.5 MOA dot for precision and speed
- Tool-less adjustments simplify zeroing
- Compatible with most RMR-ready mounting systems
- Pairs well with suppressor-height iron sights
- Trusted Trijicon durability and quality
Cons
- Slightly more expensive than smaller reflex optics
4.Leupold DeltaPoint Pro
The Leupold DeltaPoint Pro is a professional-grade red dot sight trusted by military, law enforcement, hunters, and competitive shooters alike. Model #175840, with its 2.5 MOA red dot and Dark Earth finish, blends tactical styling with advanced optical performance. Built in the USA and tested to survive the harshest field conditions, this optic is designed for those who demand speed, clarity, and rugged reliability in one refined package.
At the heart of the DeltaPoint Pro is Leupold’s Professional-Grade Red Dot Optical System, which delivers outstanding light transmission, sharp resolution, and minimal glare—even in challenging conditions like bright sunlight or dusk. Whether you’re engaging a target in harsh direct light or scanning in low-light environments, the optic delivers an incredibly clear and usable sight picture.
Speed is critical when fractions of a second count, and the DeltaPoint Pro excels here too. Its Motion Sensor Technology (MST) conserves battery life by automatically deactivating the reticle after five minutes of inactivity, then instantly reactivates it the moment motion is detected. This ensures your optic is always ready without wasting power during downtime.
With a 2.5 MOA illuminated dot that excels in both daylight and low-light shooting, the DeltaPoint Pro provides the accuracy and speed needed for defensive, competitive, and professional applications. Fully waterproof, fogproof, and shockproof—and backed by Leupold’s legendary warranty—this sight offers top-tier performance in a rugged American-made design. Whether mounted on a pistol, rifle, or shotgun, the DeltaPoint Pro is a serious optic for serious shooters.
Key Specifications
- Model Number: 175840
- Reticle: 2.5 MOA red dot
- Finish: Dark Earth
- Magnification: 1x
- Parallax Free: Yes
- Light Transmission: Professional-Grade Optical System
- Motion Sensor Technology: Yes (auto on/off after 5 minutes)
- Waterproof/Fogproof/Shockproof: 100%
- Battery Type: CR2032
- Battery Life: Extended via MST (varies by brightness level)
- Construction: Machined and assembled in the USA
- Mounting Footprint: DeltaPoint Pro footprint
Product Features
- Professional-Grade Optical System
Leupold’s advanced lens coatings and construction deliver unmatched light transmission, allowing you to maintain a clear sight picture in both harsh light and deep shadow. This ensures high contrast and edge-to-edge clarity across environments. - 2.5 MOA Illuminated Dot Reticle
The crisp, daylight-visible 2.5 MOA red dot is perfect for fast target acquisition while remaining fine enough for accurate shot placement at distance. It excels in both bright daylight and low-light settings. - Motion Sensor Technology (MST)
To conserve battery life, MST automatically deactivates the illuminated reticle after five minutes of inactivity and reactivates it instantly when movement is detected. It provides peace of mind and readiness without constant manual operation. - Extreme Ruggedness
The DeltaPoint Pro is waterproof, fogproof, and shockproof—ready to handle extreme recoil and punishing field conditions. It’s built to survive in real-world tactical, hunting, or competitive scenarios. - Made in the USA
Designed, machined, and assembled in the United States, this sight reflects Leupold’s commitment to American craftsmanship and long-term quality. It also comes with Leupold’s legendary customer service and lifetime warranty.
Pros
- Exceptional clarity and glare resistance in all lighting conditions
- Motion Sensor Technology preserves battery life automatically
- Large, clear viewing window for rapid target acquisition
- Rugged, waterproof, fogproof, and shockproof construction
- Built in the USA and backed by Leupold’s warranty
- Tactical Dark Earth finish adds aesthetic and practical appeal
Cons
- Slightly bulkier than some micro red dots for concealed carry
5.Holosun SCS‑MOS
The Holosun SCS-MOS (Solar Charging Sight) represents a new era in pistol optics technology, combining cutting-edge solar innovation with tactical functionality and no-compromise performance. Specifically designed for full-size Glock MOS pistols, the SCS-MOS mounts directly to the slide without the need for an adapter plate, giving shooters a low-profile, streamlined setup ideal for concealed carry, competition, and duty use.
At the heart of this optic lies Holosun’s solar charging system—a revolutionary feature that allows the sight to operate indefinitely under proper lighting conditions. Using a multi-directional light sensor, the SCS-MOS automatically adjusts brightness to match ambient lighting, giving you a perfect sight picture whether you’re indoors, outdoors, or transitioning between the two. It also features an intensity override for high-brightness manual mode and a low-power indicator to prevent unexpected downtime.
This model comes equipped with Holosun’s Multi-Reticle System (MRS), offering a 2 MOA green dot, a 32 MOA circle, or both. The large ring provides a fast target acquisition window and holdover reference, while the dot allows for pinpoint precision—ideal for both close-quarters and long-range shooting.
Built with a titanium housing and multilayer-coated glass for superior durability, clarity, and glare reduction, the SCS-MOS is ready to perform in any environment. With a parallax-free view, unlimited eye relief, and unmatched battery efficiency, it sets a new standard for optics on Glock MOS platforms. Note: This model is not compatible with Glock 43X MOS or 48 MOS—see Holosun “K” or “EPS Carry” models for those variants.
Key Specifications
- Reticle: Green 2 MOA dot & 32 MOA circle (MRS)
- Light Wavelength: 540nm
- Magnification: 1x (no magnification)
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: Solar + internal rechargeable battery
- Battery Life: Unlimited (solar charging)
- Battery Type: Internal rechargeable battery
- Brightness Adjustment: Auto (with manual override)
- Housing Material: Titanium
- Window Size: 0.58 x 0.77 inches
- Adjustment per Click: 1 MOA
- Windage & Elevation Range: ±30 MOA
- Mounting Footprint: Direct-to-Glock MOS (no adapter plate)
Product Features
- Direct-to-Slide Mounting for Glock MOS
The SCS-MOS is engineered to mount directly onto full-size Glock MOS slides without an adapter plate. This ensures a sleek, low-profile fit that’s ideal for co-witnessing iron sights and reducing bulk. - Self-Charging Solar Power System
The integrated solar charging system enables continuous use without ever replacing a battery. Combined with an internal 20,000-hour rechargeable battery and low-power warning indicator, this optic can potentially run indefinitely under normal use. - Automatic Brightness Adjustment with Override
Multi-directional light sensors adjust the reticle brightness to match your environment in real time. Need more control? The override feature lets you lock the brightness in high mode for 30 minutes when conditions demand it. - Multi-Reticle System (MRS)
Choose between a 2 MOA dot, a 32 MOA circle, or both. The circle is excellent for rapid target acquisition, while the dot ensures precision. Both reticles can be toggled based on your shooting application. - Multilayer Reflective Glass
Premium optical-quality lenses with advanced coatings improve light transmission, reduce glare, and enhance durability. The clarity and brightness of the green dot are maintained across various lighting environments. - Titanium Housing Construction
The titanium housing delivers superior strength-to-weight ratio and durability. It’s rugged enough for field conditions while remaining light enough for daily carry.
Pros
- Solar-powered for near-unlimited battery life
- Auto-adjusting brightness with override function
- Direct-to-slide mounting—no adapter plate required
- Multi-reticle system for flexibility and speed
- Compact titanium construction offers high durability
- Crisp green reticle with excellent glass clarity
- Includes low battery warning indicator
Cons
- Internal battery is non-removable
6.Holosun EPS Carry (enclosed emitter)
Designed specifically for today’s most popular subcompact pistols, the Holosun EPS Carry-GR-2 brings enclosed-emitter durability and cutting-edge technology to the micro-compact handgun market. Featuring a rugged 7075-T6 aluminum housing, long battery life, and Holosun’s proven green LED performance, this optic is built for concealed carry users who demand reliability, clarity, and convenience in a compact footprint.
Unlike traditional open-emitter red dots, the EPS Carry features an enclosed emitter design that seals the LED inside the housing. This offers unmatched protection from dust, water, and debris—an essential advantage for EDC pistols that may be exposed to the elements or carried in lint-prone environments like waistband holsters. Despite its compact size, the EPS Carry boasts a wide and clear 0.58 x 0.77-inch window with an aspheric lens for a distortion-free sight picture.
The 2 MOA green dot provides fast target acquisition and precise aiming, enhanced by Shake Awake technology, which conserves battery life and ensures the dot is instantly ready when motion is detected. Its low deck height also allows for co-witnessing with most factory iron sights—no need for suppressor-height backups. The optic is powered by a CR1620 battery and offers up to 50,000 hours of use depending on brightness settings.
Included with the EPS Carry is an RMSc-to-K footprint adapter plate, expanding its mounting compatibility to a wide range of subcompact handguns like the Glock 43 MOS, Glock 48 MOS, SIG P365 X/XL, Springfield Hellcat, and others. Compact, sealed, and feature-rich, the EPS Carry is an ideal optic for EDC-ready pistols.
Key Specifications
- Reticle: 2 MOA green dot
- Light Wavelength: 540nm
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: CR1620 battery
- Battery Life: Up to 50,000 hours
- Brightness Settings: 10 daylight & 2 night vision compatible
- Window Size: 0.58 x 0.77 inches
- Housing Material: 7075-T6 aluminum
- Surface Finish: Anodized
- Adjustment per Click: 1.5 MOA
- W&E Travel Range: ±30 MOA
- Mount Compatibility: RMSc footprint (RMSc-to-K adapter included)
Product Features
- Compact, Enclosed Emitter Design
The sealed emitter protects internal electronics from dirt, moisture, and debris. This ensures reliable function even in extreme environments—ideal for everyday concealed carry. - 2 MOA Green Super LED Dot
The high-contrast 2 MOA green dot is sharp, bright, and easy to pick up in both bright daylight and low-light conditions, offering fast target acquisition and accuracy. - Aspheric Lens with Multilayer Coating
Delivers a distortion-free, ultra-clear sight picture. The multilayer coating enhances light transmission, reduces glare, and contributes to efficient power usage. - Shake Awake Technology
Automatically powers down after inactivity to save battery, then reactivates instantly upon movement. Users can customize inactivity timers or disable Shake Awake entirely if desired. - Ultra-Low Deck Height with Rear Notch Sight
Allows for co-witnessing with standard-height factory sights. A built-in rear notch sight provides an emergency aiming solution without extra height or bulk. - Extended Battery Life
Powered by a CR1620 battery, the EPS Carry offers up to 50,000 hours of battery life depending on use—minimizing the need for frequent replacements. - Wide Compatibility with RMSc Footprint
Ships with an RMSc-to-K footprint adapter plate, making it compatible with pistols like the G43 MOS, G48 MOS, SIG P365 X/XL, Springfield Hellcat, and more.
Pros
- Enclosed emitter design resists environmental interference
- 2 MOA green dot offers fast and accurate aiming
- Shake Awake conserves battery and improves readiness
- Crisp, distortion-free glass with high clarity
- Co-witnesses with most factory sights
- Long battery life (up to 50,000 hours)
- Includes RMSc-to-K adapter plate for broader compatibility
- Rugged 7075-T6 aluminum housing
Cons
- CR1620 battery is smaller and less common than CR2032
7.Holosun 508T X2
The Holosun HE508T-GR X2 is a premium open reflex sight crafted for shooters who need exceptional toughness, advanced features, and high-performance optics in a compact footprint. Built with a Grade 5 titanium housing, this optic is designed to endure extreme recoil, rough field use, and harsh weather conditions—making it ideal for duty carry, competition, or personal defense applications.
This model features Holosun’s signature 540nm Green Super LED, which is highly visible in bright daylight and more forgiving on the eyes than red for many users, especially those with astigmatism. The green reticle is part of Holosun’s Multi-Reticle System (MRS), which gives you the option to toggle between a 2 MOA dot, a 32 MOA circle, or both—accommodating everything from precision aiming to rapid target acquisition.
The HE508T-GR X2 is powered by a CR1632 battery, offering up to 50,000 hours of battery life, and features Shake Awake technology, which turns off the LED when the optic is idle and reactivates instantly when motion is detected. Paired with Solar Failsafe, the optic will continue to operate even if the battery fails, automatically adjusting brightness based on lighting conditions.
Its industry-standard footprint ensures broad compatibility with RMR-cut slides and mounts, while Lock Mode prevents accidental changes during carry or recoil. With a crystal-clear viewing window and a refined design, the HE508T-GR X2 brings together rugged dependability and smart technology in one elite handgun optic.
Key Specifications
- Reticle: Green 2 MOA dot & 32 MOA circle (Multi-Reticle System)
- Light Wavelength: 540nm
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: Solar & CR1632 battery
- Battery Life: Up to 50,000 hours
- Brightness Settings: 10 daylight & 2 night vision compatible
- Window Size: 0.63 x 0.91 inches
- Housing Material: Grade 5 Titanium
- Adjustment per Click: 1 MOA
- Windage & Elevation Travel Range: ±50 MOA
- Mounting Footprint: RMR-compatible
Product Features
- Grade 5 Titanium Housing
Offers superior strength and corrosion resistance while maintaining a lightweight footprint. Ideal for high-recoil firearms and harsh environments. - Multi-Reticle System (MRS)
Choose between a 2 MOA dot, a 32 MOA circle, or both. The circle-dot combo enables fast target acquisition, while the dot alone supports precision shooting. - Shake Awake Technology
Automatically deactivates the reticle during inactivity and reactivates it with the slightest movement. Increases battery efficiency and ensures instant readiness. - Solar Failsafe Backup Power
Automatically powers the optic using ambient light when the battery is low or dead. Brightness adjusts to surrounding light conditions in Auto Mode. - Green Super LED for Enhanced Visibility
The 540nm green LED is easier for many users to see and provides excellent brightness, contrast, and battery life. - Lock Mode Button Protection
Prevents accidental brightness or reticle changes during carry, competition, or defensive use by locking control buttons in place. - RMR Footprint Compatibility
Easily mounts to most RMR-cut slides and optics-ready pistols without needing an adapter plate.
Pros
- Extremely durable titanium construction
- Flexible reticle system for fast and precise shooting
- Green dot is easier to see in daylight and for astigmatic users
- Up to 50,000-hour battery life with motion-sensing Shake Awake
- Solar Failsafe offers added reliability
- Lock Mode prevents unintentional setting changes
- Compatible with most RMR-ready pistols and mounts
Cons
- Titanium build increases cost over aluminum models
8.Swampfox Justice or Liberty
The Swampfox Liberty and Swampfox Justice are rugged micro red dot sights built for shooters who want fast target acquisition, co-witness capability, and compatibility with RMR footprint mounts—without paying premium-tier prices. These two optics share nearly identical features and construction, with the primary difference being window size. Liberty is designed for everyday carry and concealed use, while Justice is tailored for duty, competition, and home defense roles.
Both models boast a 3 MOA red dot reticle powered by a high-efficiency emitter that runs up to 4,000 hours at daylight brightness settings. This performance is backed by Swampfox’s Shake ‘N Wake technology, which turns the dot off after 4 minutes of inactivity and reactivates it instantly with even the slightest movement. This smart feature allows you to carry daily without worrying about constant battery drain.
Built tough and holster-friendly, both Liberty and Justice use a top-loading CR1632 battery and feature flush brightness buttons for easier concealment and streamlined control. The emitter is low-profile enough to allow co-witnessing with .365″ or taller iron sights. They’re also compatible with all ALS duty holsters, eliminating the need for costly holster upgrades.
If you prefer a more compact optic, Liberty features a 22mm wide window and is optimized for subcompact and concealed carry pistols. Meanwhile, Justice offers a larger 27mm window, making it ideal for open carry, duty pistols, carbines, and shotguns where faster sight acquisition and visibility take priority.
Key Specifications
- Reticle: 3 MOA red dot
- Window Size (Liberty): 22mm
- Window Size (Justice): 27mm
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Power Source: CR1632 (top-loading)
- Battery Life: ~4,000 hours at daylight brightness
- Motion Activation: Shake ‘N Wake (4-minute sleep)
- Brightness Settings: Multiple manual adjustment levels
- Mounting Footprint: RMR compatible
- Housing: 7075 aluminum alloy
- Co-witness Height: Works with sights ≥ 0.365″
- Holster Compatibility: Fully fits ALS duty holsters
Product Features
- Two Size Options for Every Application
Liberty’s 22mm window is ideal for compact carry guns, while Justice’s 27mm window delivers greater field of view for duty use, shotguns, or carbines. - Shake ‘N Wake Motion Activation
Powers down the optic after 4 minutes of inactivity and reactivates it instantly when moved—saving battery life without sacrificing readiness. - Top-Loading CR1632 Battery
Easily replace the battery without unmounting the optic. This simplifies maintenance and helps preserve zero. - RMR Footprint Compatibility
Liberty and Justice use the standard RMR footprint, ensuring wide compatibility with factory optics-ready slides and popular aftermarket mounts. - Co-Witness Capable Design
The ultra-low emitter position supports co-witnessing with standard iron sights measuring 0.365″ or higher. - High Output Red Dot Emitter
The 3 MOA red dot offers sharp contrast and visibility in bright conditions. At daylight brightness, the optic still gets ~4,000 hours of use—impressive and honest. - Duty-Ready Holster Compatibility
Fully compatible with ALS duty holsters, allowing seamless integration into law enforcement or tactical gear without holster modifications.
Pros
- Two optic sizes to fit both concealed and duty use
- Shake ‘N Wake technology preserves battery and ensures readiness
- RMR footprint ensures broad slide compatibility
- Top-loading battery allows easy maintenance
- Co-witnesses with many factory-height sights
- No holster compatibility issues with ALS retention holsters
- Affordable price point with high-value features
Cons
- Shorter battery life compared to some premium red dots
9.Burris FastFire III
The Burris FastFire III stands as one of the most trusted and best-selling micro red dot sights on the market, offering a blend of reliability, versatility, and simplicity at an accessible price point. Designed for use on handguns, rifles, and shotguns, this compact red dot sight provides shooters with fast target acquisition and durable performance, whether for competition, concealed carry, or home defense.
With two reticle size options—3 MOA for precision shooting or 8 MOA for close-quarters speed—the FastFire III adapts to your specific needs. Whether you’re looking to shave seconds off your split times or make accurate hits at distance, Burris has you covered. Weighing just under an ounce, it won’t affect your weapon’s balance or handling, making it an excellent choice for lightweight setups.
One of the standout features of the FastFire III is its automatic brightness sensor, which adjusts the dot intensity based on ambient lighting conditions. It also includes three manual brightness settings for shooters who prefer direct control. The top-loading battery compartment simplifies battery changes without unmounting the optic, and the auto shut-off function helps the battery last up to 5 years.
Durability is built in—this sight is shockproof and waterproof, able to handle the recoil of high-powered handguns and harsh weather alike. Backed by the Burris Forever Warranty, the FastFire III offers peace of mind and enduring value, making it an ideal optic for shooters seeking reliability without complexity.
Key Specifications
- Reticle Options: 3 MOA or 8 MOA red dot
- Brightness Settings: Auto + 3 manual levels
- Battery Type: CR1632 (top-loading)
- Battery Life: Up to 5 years
- Brightness Adjustment: Automatic sensor + manual
- Magnification: 1x
- Parallax Free: Yes
- Eye Relief: Unlimited
- Mount Compatibility: Burris mounting systems (Picatinny, Glock, etc.)
- Construction: Shockproof and waterproof
- Weight: <1 oz
- Warranty: Burris Forever Warranty
Product Features
- Choice of 3 MOA or 8 MOA Dot Reticle
Choose between a finer 3 MOA dot for accuracy or a larger 8 MOA dot for rapid target acquisition in close quarters. Ideal for users who want a customized shooting experience. - Automatic & Manual Brightness Control
An onboard light sensor adjusts the red dot to current lighting conditions. For custom tuning, three manual brightness levels are also available. - Top-Loading CR1632 Battery
The battery compartment is located on top of the optic, allowing quick and easy replacement without the need to remove the sight or re-zero. - Lightweight, Compact Design
Weighing under an ounce, the FastFire III adds minimal bulk or weight to your firearm. This makes it suitable for pistols, shotguns, and rifles. - Shockproof and Waterproof Build
The rugged housing ensures the optic withstands recoil and environmental elements. Perfect for outdoor or tactical use. - Burris Forever Warranty
Backed by one of the most respected warranties in the industry, the FastFire III offers lifetime service and repair coverage for added peace of mind. - Tool-less Windage and Elevation Adjustment
Zeroing the sight is simple and efficient thanks to tool-free turrets, allowing quick field adjustments without special equipment.
Pros
- Multiple dot size options (3 MOA and 8 MOA)
- Auto and manual brightness settings for all conditions
- Top-loading battery design for convenience
- Lightweight and compact—great for CCW
- Shockproof and waterproof construction
- Backed by Burris Forever Warranty
- Easy zeroing with tool-less adjustments
Cons
- Shorter battery life than newer LED optics
Summary table
| Model | Footprint | Reticle | Emitter | Battery Access | Best For |
|---|---|---|---|---|---|
| Holosun HE507C X2 | RMR | 2 MOA dot/Circle | Open | Side-loading | All-around value & features |
| Trijicon RMR Type 2 | RMR | 3.25 or 6.5 MOA | Open | Bottom (removal) | Rugged durability |
| Trijicon SRO | RMR | 1–5 MOA options | Open | Top-loading | Speed, competition |
| Leupold DeltaPoint Pro | RMR | ~6 MOA dot | Open | Top-loading | Clarity + co‑witness flexibility |
| Holosun SCS‑MOS | Direct MOS slide | Multi‑reticle | Open | Top-loading | Ultra low profile, carry |
| Holosun EPS Carry | RMR via plate | 6 MOA dot | Enclosed | Side-loading | Concealed carry reliability |
| Holosun 508T X2 | RMR via plate | Multi‑reticle | Open | Side-loading | Field/competition versatility |
| Swampfox Justice/Liberty | RMR | 3 MOA dot | Open | Motion activation | Budget solid performance |
| Burris FastFire III | RMR via plate | 3 MOA dot | Open | Top-loading | Ultra-light, ultra-affordable |
Also Read: 6 Best Holosun Red Dots for Glock 19 MOS
Factorst to consider when choosing the best red dot for Glock 45 9mm
1. Mounting Footprint Compatibility
Ensure the red dot uses a compatible footprint with the Glock 45 MOS (Modular Optic System). The Glock 45 typically comes with mounting plates for common footprints like RMR, Holosun K, and Docter/Noblex. Choosing an optic with a direct fit or compatible adapter saves time and money.
2. Durability and Build Quality
Glock 45 is often used for duty or self-defense, so your optic must be shockproof, waterproof, and recoil-resistant. Look for rugged materials like 7075-T6 aluminum or titanium, and make sure the optic is tested for harsh environments.
3. Battery Life and Power Management
Long battery life is crucial for reliability. Optics with 50,000+ hour battery life, Shake Awake, auto shut-off, or solar backup ensure the red dot is always ready when needed. Top-loading batteries are preferred for easy changes without removing the optic.
4. Reticle Type and Size
Consider whether you prefer a 2–3 MOA dot for precision or a larger 6–8 MOA dot for speed. Some models offer Multi-Reticle Systems (MRS) combining dots and circles for flexibility. A smaller dot is better for target shooting, while larger dots excel in close-quarters.
5. Co-Witness Height
If you want to use your iron sights as a backup, make sure the optic has a low enough deck height to co-witness with standard or suppressor-height sights. Some optics have built-in rear notches to assist with alignment.
6. Window Size and Clarity
Larger windows offer faster target acquisition and better peripheral awareness, while smaller windows are more compact for concealed carry. Choose one that matches your intended use—larger for duty, smaller for carry.
FAQs
1. What red dot footprint fits the Glock 45 MOS?
The Glock 45 MOS is designed to accept multiple optic footprints via interchangeable mounting plates. The most common compatible footprints include Trijicon RMR, Holosun K series, and Docter/Noblex. Always verify which plate is included with your pistol and match it with your optic or buy an aftermarket adapter if needed.
2. Do I need suppressor-height sights to co-witness with a red dot?
It depends on the red dot’s deck height (how high it sits above the slide). Some optics, like the Holosun EPS Carry or Trijicon SRO, are low enough to co-witness with standard factory sights, while others may require suppressor-height sights for a full or lower 1/3 co-witness. Check the optic specs before purchasing backup sights.
3. Is a green or red dot better for Glock 45?
Both perform well, but green dots are often easier to see in bright light and are preferred by shooters with astigmatism. Red dots tend to consume less battery and are more traditional. Choose the one that best suits your eyes and typical shooting environments.
4. Can I use my Glock 45 with a red dot for concealed carry?
Yes, the Glock 45 can be concealed with a red dot, especially if you use a compact optic like the Holosun 507K, Swampfox Liberty, or Trijicon RMRcc. Choose a low-profile sight and pair it with a holster designed for optics to maintain concealability.
Conclusion
Choosing the best red dot sight for your Glock 45 9mm ultimately depends on how you intend to use your pistol—whether for duty, concealed carry, home defense, or range training. The ideal optic should offer a balance of rugged durability, long battery life, quick target acquisition, and seamless mounting compatibility with the Glock 45 MOS system.
Options like the Holosun 507C X2, Trijicon RMR Type 2, and Swampfox Liberty stand out for their proven performance, RMR-compatible footprints, and user-friendly features such as Shake Awake, multi-reticle systems, and top-loading batteries. Meanwhile, optics like the Burris FastFire III or Leupold DeltaPoint Pro provide excellent value for shooters who prioritize simplicity and reliability.
Whether you’re a first-time red dot user or an experienced shooter upgrading your setup, investing in the right optic can dramatically enhance your speed, precision, and confidence on target. Just be sure to prioritize features that match your specific shooting needs and always verify compatibility with your Glock 45’s mounting system.
With the right red dot, your Glock 45 9mm becomes an even more capable platform—ready for anything from rapid defensive engagements to precision shooting drills.