Improve your aim and reaction time by mounting an efficient optic on your handgun. Mounting a red dot sight on your Glock 40 MOS will enhance your precision for almost every application. This guide will help you find the best Glock 40 MOS red dot sights.
When it comes to enhancing your shooting experience with Glock 40 MOS, you should have the right accessories at hand. This optic-ready pistol pairs well with a wide range of accessories but none can beat red dot sights.
With a worthy red dot sight at your disposal, you will have an easy time finding and acquiring targets. This is irrespective of the kind of shooting you are doing or the shooting environment.
Red dot sights also play a vital role in boosting your overall shooting confidence, especially in low-light settings. The LED illumination focuses the red dot on the target so you can take precise shots in any lighting condition.
However, knowing which red dot sight to get is no mean feat given the plethora of models available out there. We will go over the very best models to help you determine the perfect option for your needs. Let’s get started.
1) Primary Arms SLx 1x23mm Mini Red Dot Reflex Sight
Equipping your pistol with this reflex sight will enhance your precision and reduce target acquisition time significantly. As one of the best Glock 40 MOS red dot sights, this reflex sight will elevate your shooting performance.
It is a compact, lightweight, and versatile optic that proves its reliability when you need it the most. Though lightweight, it doesn’t compromise quality or durability. It has a ruggedized 7075 aluminum housing that is rigid enough to endure outdoor use.
The body is anodized against scratches and weatherproofed to ensure reliable field use in all environments.
Another impressive thing that makes it the best Glock 40 MOS red dot is its battery life. It provides up to 40000 hours of continuous operation. Besides, the battery slot is on the side to ensure easy change of the battery.
The other noteworthy features included are fully multi-coated optics, convenient push-button controls, and multiple brightness settings that are daylight bright and night vision compatible.
Features
- Hard coat anodized finish
- 3 MOA red dot reticle
- Fully multi-coated optics
- 7075 aluminum housing
- Enclosed emitter
- Side-loading battery compartment
- Autolive motion activation
Pros
- Compact and ultra-lightweight
- Multiple mounting options
- Night vision compatibility
- Affordable
- Ease of use
Cons
- Slow refresh rate
2) AT3 Tactical ARO Micro 3 MOA Red Dot Reflex Sight
Engage close-range targets with a reflex sight that ensures utmost visibility in any lighting condition. The AT3 Tactical ARO red dot is ready to mount onto just about any handgun making it a prime choice for Glock 40 MOS.
It is easy to install and simple to use even for beginners. The other positive attribute of this red dot sight is the budget-friendly price. Get more control over your shooting environment with a dependable reflex sight.
A highlight of this compact red dot sight is its solid construction. It is built tough as a nail to handle all the abuse that comes with handgun shooting.
Furthermore, it is coated with a scratchproof and corrosion-resistant anodized finish that’s non-reflective.
This red dot sight has a parallax-free optical design to maximize shooting precision. The bright 3 MOA reticle has 6 adjustable brightness settings that ensure optimal visibility in any lighting conditions.
The reflex sight also features multi-coated optics that enhance light transmission and fight glare in broad daylight.
Features
- Anodized finish
- Multi-coated optics
- 3 MOA red dot reticle
- Aircraft-quality aluminum housing
- Parallax-free design
- Infinite eye relief
- Waterproof and shockproof circuitry
Pros
- Crisp clear reticle
- Compact and lightweight
- Inexpensive
- Multi-platform friendly
Cons
- Poor battery life
3) SIG SAUER Romeo 9T 1x38mm Red Dot Sight
SIG SAUER Romeo 9T is a high-performance optic built to improve your aiming capabilities. As one of the best Glock 40 MOS red dot sights, Romeo 9T harbors innovative and advanced features that will transform your shooting experience.
Mounting the red dot sight will not only boost your aiming confidence but also improve your target acquisition speed. This proficient red dot sight will also improve your accuracy in any lighting condition.
This optic boasts a proprietary optical design that mitigates downrange light signature. It is designed and tuned for passive night vision performance, including night vision override controls.
Furthermore, it has a robust titanium shroud and mounting hardware that make it easy to install and dismount. The entire housing is also IPX8 waterproofed and fog-proofed to ensure unimpeded performance no matter the weather conditions.
Features
- Dual red and green independently zeroed emitters
- IPX8 waterproof and fog-proof
- Titanium shroud
- Mounting hardware
- Proprietary optical design
- Different zero distances
- Caliber exchange kits
Pros
- Solid and reliable construction
- Ease of use
- Bright and crisp optics
Cons
- Relatively heavy
- Big budget
4) Vortex Defender CCW 1x25mm 6 Red Dot Sight
The Vortex Defender CCW red dot sight is a top-notch optic created with top-quality materials to deliver reliable performance for close-range shooting scenarios. This is a compact, lightweight, and easy-to-use red dot sight suitable for everyday carry.
It is built with a 6 MOA red dot reticle which is very easy to spot. The brightness of the reticle is adjustable into 10 illumination settings, two of which are night vision compatible. Besides, the sight is built with an aspherical lens which provides distortion-free sight pictures.
When it comes to construction, this optic is built to last. It has a rugged aluminum construction and a black anodized finish which is resistant to corrosion and wear. Moreover, it is built with a fast-rack aggressive texturing on the face for racking slide off any surface.
To top off everything else, the Vortex Defender CCW red dot sight is O-ring sealed to lock out dust, moisture, and debris. Create a more efficient shooting experience by mounting the Vortex Defender CCW Red Dot on your Glock 40 MOS.
High-quality materials, unlimited eye relief for optimum comfort when scanning for targets, and dependable performance when it matters most are the positive attributes that make the Defender CCW one of the best Glock 40 MOS red dot sights.
Features
- Low-glare matte anodized finish
- Fast-rack texturing
- Top-mount battery
- Waterproof and fog-proof
- Rugged construction
- Large hard-coated aspherical lens
- Motion-activated illumination
- 8 daytime, 2-night vision brightness settings
Pros
- Decent battery life
- Compact and lightweight
- Ease of installation
- Rugged and reliable
- Night vision gear compatibility
Cons
- Battery access
- Incompatibility with some holsters
5) Vortex Razor Reflex Red Dot Sight
The Razor Reflex Red Dot Sight is another reliable and well-built Glock 40 MOS red dot from Vortex. It harbors an array of features that you need to hone your shooting skills and acquire targets with high accuracy.
Built with a one-piece chassis, this red dot sight is shockproof with a high recoil rating. Even with repeated use, it withstands normal wear and tear to ensure that you get many years of service. Moreover, it is coated with an Armortek coating that guards it from oil, scratches, and dirt.
Optically, the red dot sight has XR fully multi-coated lenses that maximize light transmission. During use, you can tailor the brightness of the reticle into 9 different levels for confident aiming across different light settings.
Features
- Infinite eye relief
- Single-piece chassis
- Hard anodized finish
- XR fully multi-coated optics
- Armortek lens coating
- 9 brightness settings
- Aluminum alloy chassis
- 1 MOA adjustment click value
- Fully waterproof and shockproof
Pros
- Lightweight construction
- Easy to mount
- Clear glass
- High-quality construction
Cons
- Battery life
6) SIG SAUER Romeo 1 1x30mm Mini Reflex Sight
If you are a beginner in shooting, we recommend the SIG SAUER Romeo 1 1x30mm Mini Reflex Sight. It is built with ease of use in mind and comes with a plethora of high-quality features to hone your shooting skills.
This optic is designed to maintain consistent zero shot after shot. It has a TruHold twin adjustment spring which provides a lock-less zeroing system even with repeated recoil. Other than that, the small footprint allows low and co-witness mounting.
Another selling point of this mini-reflex sight is its robust construction. It is made from a solid billet of magnesium for lightweight strength. Moreover, the IPX-7 rating guarantees unimpeded performance in all environments and temperatures ranging from -40 to 140℉.
Above all, the red dot sight features 10 adjustable illumination settings which ensure optimal aiming under different light settings.
Features
- Unlimited eye relief
- String CNC magnesium housing
- Top-loading battery compartment
- Low reflectivity matte finish
- Motion-activated illumination
- IPX-7 waterproof rating
- HDX optical coating
- 3 MOA red dot reticle
- 1 MOA adjustment click value
Pros
- Long battery life
- Accurate
- Easy to mount and use
- Lightweight
Cons
- Plastic battery cap
7) EOTech EFLX Mini Reflex Red Dot Sight
EOTech EFLX Mini Reflex Red Dot Sight marks our seventh pick of the best Glock 40 MOS red dot. It is designed and built with advanced features to meet the demands of every serious shooter out there.
The build quality of this red dot sight is incredible. It has rugged aluminum housing which provides outstanding durability and dependability. The top battery compartment included provides a waterproof circuitry and makes it easy to remove the battery for replacement.
What’s more, this red dot sight has high-tech front glass which is clear and distortion-free. It is large enough to help you find the aiming dot quickly and with ease.
Besides, there are eight brightness settings for you to customize the brightness of the reticle to suit ambient light settings.
Features
- Aluminum housing
- Push button switch
- Top-loading battery compartment
- Unlimited eye relief
- High-tech front glass
- Eight brightness settings
- 1 MOA adjustment click value
Pros
- Ultra-lightweight
- Outstanding durability
- Large, unobstructed field of view
Cons
- Comparatively costly
8) Trijicon SRO MOA Red Dot Sight
Last but not least, we have the Trijicon SRO MOA Red Dot Sight. Trijicon has a reputation for making high-quality optics and this red dot sight is not an exception.
It stands out in terms of construction featuring a robust 7075-T6 aluminum housing. The entire body is anodized against scratches and rust when you use it in wet environments. Moreover, the optic is waterproof to 10ft to be usable in all weather conditions.
The optical features of this sighting tool are as outstanding as the construction quality. It boasts anti-reflection multi-coated optics that ensure clear, high-contrast views. Other than that, the infinite eye relief coupled with the unlimited field of view enables shooting with both-eyes-open shooting.
This red dot sight also brings to the table a medium-sized 2.5 MOA LED dot reticle with eight adjustable brightness settings.
Features
- Parallax-free optics
- Infinite eye relief
- 5 MOA red dot reticle
- Durable 7075-T6 aluminum housing
- Top-loading battery compartment
- Waterproof and submersible to 10ft
- Anti-reflection multi-coated optics
- Tempered glass window
Pros
- Clear, crisp dot
- Large field of view
- Decent battery life
- Ease of use
Cons
- Fragility
Further Reading
- Best Red Dots for Taurus GX4
- Red Dot Sights for Glock 43
- Best Glock 26 Red Dot Sights
- Walther Q5 Match Red Dot Sights
How to Choose the Best Glock 40 MOS Red Dot Sights
Here are a few of the important factors to take into consideration when looking to buy a Glock 40 MOS red dot sight.
Compatibility
The plethora of red dot sights available on the market come with different mounting systems. Before you settle on any particular product, look at the mount it comes with and ensure that it is compatible with your Glock 40 MOS.
Reticle Size
Just like the mounting system, the reticle size in red dot sights varies from one product to the other.
Determine your shooting needs when making your selection and opt for a small and mid-sized reticle size if what you are after is precision at extended ranges. On the other hand, we recommend large-sized reticles for users with aging eyes.
Read: Best Red Dots for Glock 34
Brightness Settings
The next thing to consider is brightness settings. The more adjustable the brightness settings a red dot sight comes with the better.
In different lighting conditions, you will be able to tailor the brightness of the reticle to match the ambient light settings.
Durability
It is without a doubt that durability plays a vital role in the overall performance of a sighting tool. For the best Glock 40 MOS red dot sights, pick a model that is crafted with longevity in mind.
It will stand up to abuse and endure all the rough handling associated with outdoor use. The red dot should also have waterproof and shockproof circuitry for use in any environment.
Read: Best Red Dots for Glock G20
Battery Life
Don’t forget to check the battery life. The longer the battery life, the more reliable the red dot sight becomes.
Opt for a model with a high-capacity battery and several battery conservation features like motion-activated illumination.
Best Glock 40 MOS Red Dot Sights FAQs
Q: What is the ideal MOA size for a Glock 40 MOS Red Dot Sight?
It depends on individual preference and how far you will be shooting. Small and mid-sized reticles of 4 MOA and below are commonly preferred for this handgun. They are easy to use and accurate even at extended ranges.
Q: Can I Co-witness Iron Sights with a Glock 40 MOS Red Dot Sight?
Yes. If the red dot sight allows, you can co-witness it with suppressor-heights iron sights and use them as backup sights in case the red dot fails.
Final Shot
The key to optimizing the performance of Glock 40 MOS is getting a red dot sight. All the models highlighted above are compatible with this handgun. They are easy to use and ideal for virtually all scenarios. Look at the attributes that make each red dot sight a good purchase and choose accordingly.