Top 6 Best Red Dot Sights for FN Reflex MRD in 2025

As an avid firearms enthusiast, I've spent considerable time with a variety of optics, and the FN Reflex MRD has always intrigued me due to its cutting-edge design and compatibility with modern red dot sights.
Whether you're looking for a red dot to enhance your target acquisition speed or simply want a reliable sight for your everyday carry, choosing the best red dot for your FN Reflex MRD in 2025 can be a daunting task.
In this comprehensive review, I will guide you through the top contenders in the market, providing detailed insights into their specifications, strengths, and weaknesses.
I'll also share my personal experiences with these products, incorporate feedback from the broader firearms community, and answer some frequently asked questions to help you make an informed decision.

Top 6 Best Red Dot Sights for FN Reflex MRD in 2025

1. Trijicon RMR Type 2

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Specifications:
Reticle: 3.25 MOA dot
Battery Life: 4 years on a single CR2032 battery
Adjustment: 1 MOA per click
Waterproof: Up to 20 meters
Weight: 1.2 oz
The Trijicon RMR Type 2 is often hailed as the gold standard in red dot sights, and for good reason. Designed for durability and precision, this optic is engineered to withstand the harshest conditions while maintaining zero. The 3.25 MOA dot size strikes a balance between quick target acquisition and pinpoint accuracy, making it versatile for both close-quarters engagements and longer shots.
Best Features:
Durability: The RMR Type 2 is built from 7075-T6 aluminum, providing a ruggedness that’s second to none.
Auto-adjust Brightness: The sight automatically adjusts to ambient light conditions, but you can also manually set the brightness to your preference.
Battery Life: With a 4-year battery life, you won’t have to worry about your optic dying at an inopportune moment.
Pros:
Exceptional build quality
Long-lasting battery
Auto-adjust brightness feature
Cons:
Higher price point
Limited field of view compared to some competitors
Personal Experience:
The Trijicon RMR Type 2 has been my go-to red dot for several years. Mounted on my FN Reflex MRD, it has never failed me in various conditions, whether it’s harsh weather or rigorous range sessions. The durability is impressive—I've accidentally dropped my firearm with the sight attached more than once, and it has never lost zero or suffered any damage.
Customer Comments:
Online forums and reviews consistently praise the RMR Type 2 for its reliability. Many users echo my sentiments about its durability and battery life, with one reviewer stating, “The RMR Type 2 is the most reliable red dot I’ve ever owned.”
Mounting:
This red dot sight can be mounted directly to the FN Reflex MRD without the need for additional plates or mounts, making it an excellent choice for those who prefer a seamless setup.

2. Holosun 507C X2

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Specifications:
Reticle: 2 MOA dot & 32 MOA circle
Battery Life: Up to 50,000 hours
Solar Failsafe: Yes
Adjustment: 1 MOA per click
Weight: 1.5 oz
The Holosun 507C X2 offers a unique blend of advanced features at an affordable price point. With multiple reticle options, a solar backup, and impressive battery life, this sight is a strong contender for those looking to enhance their FN Reflex MRD.
Best Features:
Multiple Reticles: You can switch between a 2 MOA dot, a 32 MOA circle, or a combination of both, depending on your shooting needs.
Solar Failsafe: The solar panel on top of the optic ensures that your sight will continue to function even if the battery dies.
Shake Awake Technology: The sight automatically powers on when it detects motion, ensuring it's ready when you are.
Pros:
Versatile reticle options
Excellent battery life
Affordable price
Cons:
Slightly bulkier than some competitors
Buttons can be a bit stiff to press
Personal Experience:
When I first tried the Holosun 507C X2, I was immediately impressed by its feature set, especially at its price point. The solar failsafe is a game-changer, providing peace of mind that my optic will always be operational. The 32 MOA circle reticle is particularly useful in fast-paced shooting scenarios, where quick target acquisition is essential.
Customer Comments:
The Holosun 507C X2 is widely praised in the shooting community for its value. One customer mentioned, “You get so much bang for your buck with this optic—features that you’d only expect from higher-end models.”
Mounting:
The 507C X2 can be mounted directly to the FN Reflex MRD. However, depending on your preference, you might need a plate for the perfect co-witness setup with iron sights.

3. Leupold DeltaPoint Pro

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Specifications:
Reticle: 2.5 MOA dot
Battery Life: Approximately 1,600 hours on a CR2032 battery
Adjustment: 1 MOA per click
Waterproof: Up to 33 feet
Weight: 2.0 oz
Leupold is a name synonymous with quality optics, and the DeltaPoint Pro is no exception. Designed with competitive shooters in mind, this red dot sight offers a large field of view and a crisp reticle, making it a top choice for those who demand speed and precision.
Best Features:
Large Viewing Window: The DeltaPoint Pro’s large window allows for quick and easy target acquisition.
Motion Sensor Technology: The sight turns on instantly when motion is detected, saving battery life when not in use.
Rugged Design: Built to withstand the recoil of powerful handguns and rifles.
Pros:
Excellent field of view
Motion-activated power
Durable construction
Cons:
Shorter battery life
Slightly heavier than other options
Personal Experience:
The DeltaPoint Pro has served me well in various shooting competitions. The large viewing window is a significant advantage when transitioning between targets, and the motion sensor ensures that the sight is always ready when I draw my firearm.
Customer Comments:
Leupold’s DeltaPoint Pro is often praised for its wide field of view. One user on a popular forum stated, “I love how much of the target area I can see with the DeltaPoint Pro—it makes a huge difference in high-speed scenarios.”
Mounting:
This sight can be mounted directly to the FN Reflex MRD, though you may want to explore different mounting plates if you need a customized height or co-witness with iron sights.

4. Vortex Venom

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Specifications:
Reticle: 3 MOA dot
Battery Life: Up to 30,000 hours
Adjustment: 1 MOA per click
Waterproof: Yes
Weight: 1.1 oz
The Vortex Venom is a highly regarded red dot sight that offers reliability and performance at a price that won’t break the bank. Its lightweight design and straightforward functionality make it an excellent choice for both new and experienced shooters.
Best Features:
Compact Design: The Venom’s low profile doesn’t add unnecessary bulk to your firearm.
Ease of Use: Simple controls make adjusting brightness and zeroing the sight quick and hassle-free.
Price: An excellent balance between cost and performance.
Pros:
Lightweight and compact
Long battery life
Affordable
Cons:
Not as durable as higher-end models
Slight parallax at extreme angles
Personal Experience:
The Vortex Venom was one of the first red dots I used on my FN Reflex MRD, and it has remained in my rotation ever since. Its compact design complements the slim profile of the firearm, and I appreciate how easy it is to adjust the brightness on the fly.
Customer Comments:
Many shooters consider the Venom to be the best value in red dot sights. One reviewer mentioned, “For the price, you really can’t beat the Venom. It does everything I need and then some.”
Mounting:
The Vortex Venom can be mounted directly onto the FN Reflex MRD. Depending on your specific model, you may or may not need a mounting plate for optimal alignment with your iron sights.

5. Sig Sauer Romeo1Pro

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Specifications:
Reticle: 3 MOA dot
Battery Life: Up to 20,000 hours
Adjustment: 1 MOA per click
Waterproof: IPX-7 rated
Weight: 1.0 oz
Sig Sauer has been a trusted name in the firearms industry for decades, and the Romeo1Pro lives up to that legacy. This red dot sight is packed with features that make it a top choice for serious shooters.
Best Features:
Stealth ID: The sight’s design minimizes snag points, ensuring a smooth draw.
MOTAC (Motion Activated Illumination): The sight automatically powers up when it senses motion and powers down when at rest, preserving battery life.
TruHold Lockless Zeroing System: Maintains zero regardless of recoil or environmental conditions.
Pros:
Lightweight and low-profile design
Reliable zero retention
Motion-activated illumination
Cons:
Shorter battery life compared to some competitors
Slightly expensive
Personal Experience:
The Romeo1Pro is a recent addition to my collection, and it has quickly become one of my favorites. The MOTAC feature is particularly useful, ensuring that my sight is always on when I need it, without draining the battery unnecessarily.
Customer Comments:
The Sig Sauer Romeo1Pro is well-received in online communities, with users praising its reliability and design. One comment that stood out to me was, “The Romeo1Pro is a fantastic sight—it’s tough, accurate, and the MOTAC is a lifesaver.”
Mounting:
The Romeo1Pro is designed to be mounted directly to the FN Reflex MRD, making it an easy and convenient choice for those who prefer a simple setup.

6. Swampfox Liberty 1x22

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Specifications:
Reticle: 3 MOA dot
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