Description
Keep both eyes open and your target in focus with Holosun’s fully enclosed pistol sight built for serious shooters.
The Holosun EPS eliminates the debris and moisture concerns of open-emitter designs while maintaining an ultra-low profile that co-witnesses with your standard-height iron sights. This enclosed reflex sight delivers exceptional durability in a compact package, protecting the LED emitter from dust, water, and fouling that can disrupt your sight picture during critical moments. The aspherical glass lens provides clear target acquisition, while Shake Awake technology ensures your dot activates the instant you need it.
Key Features
- Fully Enclosed Emitter Design: Keeps the LED protected from debris, moisture, and powder residue that commonly interfere with open-emitter sights, ensuring consistent dot clarity in all conditions
- Ultra-Low Deck Height: At 0.99 inches tall, this sight co-witnesses with standard factory iron sights on most full-size pistols, eliminating the need for suppressor-height sights
- Extended Battery Life: Up to 50,000 hours of operation from a single CR1620 battery with Shake Awake technology that powers down during inactivity and instantly reactivates with movement
- Military-Grade Aluminum Construction: Precision-machined from 7075-T6 aluminum with an anodized finish and IPX8 waterproof rating, tested to withstand 5,000G of vibration
Important Compatibility Notes
- The EPS-RD-2 uses the Holosun “K” series footprint (modified RMSc), which differs from standard RMR cuts
- An RMR-to-K adapter plate is included with this sight for pistols with RMR mounting patterns
- Direct-mount compatible pistols include: Sig P365/P365XL, Ruger Max-9, S&W Equalizer, FN Reflex MRD, and other K-footprint cut slides
- Pistols requiring the included adapter plate: Glock models with RMR cuts, Sig P320/M17/M18 (with RMR plate), Staccato 2011 (with RMR plate)
Why We Carry It
The EPS represents Holosun’s answer to one of the most common complaints about pistol red dots: vulnerability to environmental contamination. While open-emitter designs have dominated the market for years, they’re prone to lens fouling from debris and moisture. The enclosed design of the EPS solves this issue while maintaining the lowest deck height in Holosun’s lineup. Since its release, the EPS has gained significant traction among competitive shooters and law enforcement who need reliable performance without constant lens maintenance. The sight’s aspherical glass lens minimizes distortion compared to standard curved lenses, and the 2 MOA dot provides the precision needed for accurate shooting at extended pistol distances.
Frequently Asked Questions
Will this sight work with my existing pistol cut?
The EPS uses the Holosun K footprint. If your pistol has a K-footprint or RMSc cut, it should mount directly or with minimal modification. For RMR-pattern cuts (common on Glock MOS, Sig P320, and Staccato), use the included RMR-to-K adapter plate. Check your pistol’s manual or measure your optic cut to verify compatibility before purchase.
How does the enclosed design affect dot clarity and brightness?
The enclosed emitter protects the LED while the aspherical glass lens maintains a clear sight picture. The sight offers 8 daylight brightness settings and 4 night-vision compatible settings. Some users with astigmatism may perceive the dot differently than others, which is common with all LED red dots. The glass has a slight blue tint that helps enhance dot visibility against bright backgrounds.
Can I use this sight for concealed carry, or is it too large?
The EPS is designed for full-size pistols and measures 1.62″ × 1.19″ × 0.99″, weighing 1.4 ounces. While it works well on duty and carry guns, Holosun makes the EPS Carry variant specifically for subcompact and micro-compact pistols like the Glock 43X/48 and Sig P365. Consider the EPS Carry if you’re running a slimmer slide profile.
Spec Sheet
OPTICAL DATA
- Reticle: 2 MOA Dot
- Light Wavelength: 650nm
- Reticle Color: Red
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
- Window Size: 0.63″ × 0.91″
ELECTRONIC DATA
- Power Source: Battery
- Battery Type: CR1620
- Battery Life: 50,000 Hours
- Brightness Settings: 8 Daylight & 4 Night Vision
MECHANICAL DATA
- Housing Material: 7075 T6 Aluminum
- Surface Finish: Anodized
- Adjustment per Click: 1.5 MOA
- Windage & Elevation Travel Range: ±30 MOA
- Mounting Footprint: Holosun “K” Series
PHYSICAL DATA
- Dimensions: 1.62″ × 1.19″ × 0.99″
- Weight: 1.4 oz
ENVIRONMENTAL DATA
- Storage Temperature: -40℃ to 70℃
- Working Temperature: -30℃ to 60℃
- Submersion Rating: IPX8
- Vibration Resistance: 5,000G
PACKAGE CONTENTS
- EPS-RD-2 Reflex Sight
- RMR-to-K Adapter Plate
- Multi-Tool
- User Manual
- Lens Cloth
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