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Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The FN FN REFLEX XL MRD [BLK] is a compact red dot sight engineered for rapid target acquisition. Its design integrates seamlessly with the FN Reflex XL pistol, offering a low-profile optic solution. Available now for $249.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the FN FN REFLEX XL MRD [BLK]?
| Product Type | Red Dot Sight |
|---|---|
| Material | Aircraft-grade Aluminum |
| Manufacturing | Precision Machined |
| Finish | Hard Anodized Black |
| Hardness/Quality | Durable, Shock-Resistant |
| Compatibility | FN Reflex XL (MRD cut), Shield RMSc footprint |
| Installation/Usage | Direct Mount (screws included), Top-loading battery |
| Weight | Approx. 1.0 oz |
| Dimensions | Length: 1.6 inches, Width: 0.9 inches, Height: 0.9 inches |
| Country of Origin | USA |
| Condition | New |
| SKU | 66-101188 |
| Reticle | 3 MOA Dot |
| Battery Type | CR2032 |
What features does the FN FN REFLEX XL MRD [BLK] offer?
- Precision 3 MOA Red Dot: The 3 MOA dot provides a balance of speed and precision, suitable for both close-quarters and medium-range engagements. It’s a size that allows for quick acquisition without obscuring too much of the target.
- Shield RMSc Footprint: This optic uses the widely adopted Shield RMSc footprint, making it compatible with a range of pistols beyond just the FN Reflex XL that have been milled for this standard. This is a practical consideration for owners with multiple firearms.
- Robust Aluminum Housing: Constructed from aircraft-grade aluminum, the housing is designed to handle recoil and daily use. It’s hard anodized in black, which helps resist scratches and corrosion, maintaining its appearance and function over time.
- Top-Loading Battery Compartment: The CR2032 battery loads from the top, meaning you don’t have to remove the optic from your pistol to change the battery. This saves time and maintains your zero, which is a significant convenience.
- Adjustable Brightness Settings: Multiple brightness settings allow you to adapt the red dot intensity to various lighting conditions, from bright daylight to low-light environments, ensuring visibility of the reticle.
- Shake Awake Technology: This feature conserves battery life by putting the optic into a sleep mode when stationary. Movement reactivates the reticle instantly, so it’s ready when you are, without fumbling for buttons.
- Low-Profile Design: Specifically engineered to sit low on the slide, the FN Reflex XL MRD [BLK] allows for co-witnessing with some suppressor-height iron sights. This provides a backup aiming solution and a more natural sight picture.
Who is the FN FN REFLEX XL MRD [BLK] for?
This optic is designed for handgun owners looking to enhance their aiming capabilities with a compact, reliable red dot sight. It’s particularly well-suited for those who prioritize fast target acquisition and a clear sight picture on their FN Reflex XL or other RMSc-compatible pistols.
Buy it if:
- You own an FN Reflex XL with an MRD cut and want a factory-matched optic.
- You are looking for a compact red dot sight with a Shield RMSc footprint.
- You value features like a top-loading battery and Shake Awake technology.
- You want a durable, black red dot sight for everyday carry or range use.
- You appreciate a 3 MOA dot for a balance of speed and precision.
Skip it if:
- You require a larger window or a different reticle type (see our Optics for other options).
- Your pistol does not have an RMSc footprint or an adapter plate is not available (check your pistol’s compatibility).
- Your budget is significantly lower, as there are more entry-level red dots available (though often with fewer features).
How does the FN FN REFLEX XL MRD [BLK] compare to other red dots?
| Feature | FN FN REFLEX XL MRD [BLK] | Budget RMSc Red Dot (e.g., generic import) | Premium RMSc Red Dot (e.g., Holosun 407K) |
|---|---|---|---|
| Material | Aircraft-grade Aluminum | Aluminum Alloy/Polymer | 7075 T6 Aluminum |
| Quality | Good, solid construction | Variable, often less robust | Excellent, high durability |
| Compatibility | Shield RMSc footprint | Shield RMSc footprint | Shield RMSc footprint |
| Shipping | Same-day from Wichita, KS | Varies by seller, often slower | Varies by seller |
| Lifespan/Durability | Designed for regular use, good recoil resistance | Limited, may not hold zero as well over time | Very high, extensive testing |
| Price | $249.00 | ~$60-80 | ~$250-300 |
| Key Feature | Top-loading battery, Shake Awake | Basic functionality | Multi-reticle options, Solar Failsafe |
Frequently Asked Questions about the FN FN REFLEX XL MRD [BLK]
What does FN+F4 do?
The combination of FN+F4 is a keyboard shortcut on many laptops, typically used to adjust display settings, such as mirroring or extending the screen. It is not related to the FN FN REFLEX XL MRD [BLK] red dot sight.
What does MRD mean in the product name?
MRD stands for Micro Red Dot. It signifies that this is a compact red dot sight designed for pistols, particularly those with a smaller footprint.
Is the FN Reflex XL MRD [BLK] waterproof?
While FN does not typically provide a specific IP rating for this optic, it is designed to be weather-resistant and handle typical outdoor conditions, including light rain. It’s not intended for submersion.
What battery does the FN Reflex XL MRD [BLK] use?
The FN Reflex XL MRD [BLK] uses a single CR2032 battery, which is a common and easily replaceable coin-cell battery.
Can I mount the FN Reflex XL MRD [BLK] on other pistols?
Yes, if your pistol slide is cut for the Shield RMSc footprint or if you have an adapter plate that converts your slide’s cut to the RMSc standard, you can mount the FN Reflex XL MRD [BLK].
Does the FN Reflex XL MRD [BLK] come with mounting screws?
Yes, the FN Reflex XL MRD [BLK] typically includes the necessary mounting screws for installation on an FN Reflex XL pistol with an MRD cut.
Where can I buy red dots online?
You can buy red dots and other firearms accessories online from reputable FFL dealers like Kansas Gunshop at kansas-gunshop.com. We stock a range of optics and ship directly from Wichita, KS.
✅ Same-day shipping from Wichita, KS
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✅ 30-day returns
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