Description
This enclosed reflex sight delivers a protected 6 MOA red dot in the industry’s lowest profile design for full-size pistols.
Whether you’re training at the range or carrying for defense, keeping your optic’s emitter protected from the elements makes all the difference in reliability. The Holosun EPS combines a fully enclosed design with an ultra-low mounting height, allowing you to co-witness with standard-height iron sights on most full-size pistols while protecting the LED emitter from dust, moisture, and debris that can compromise open-emitter designs. The included RMR adapter plate provides broad compatibility across popular optics-ready platforms.
Key Features
- Enclosed Emitter Design: Fully enclosed housing protects the LED from environmental contaminants while maintaining a crystal-clear sight picture through the aspherical glass lens
- Ultra-Low Deck Height: At 0.99 inches tall, this is Holosun’s lowest-profile enclosed sight, enabling co-witness with standard-height factory iron sights on many pistol models
- Extended Battery Life: CR1620 battery provides up to 50,000 hours of operation across 12 brightness settings (8 daylight, 4 night vision compatible)
- Dual-Footprint Compatibility: Native Holosun K-series footprint with included RMR-to-K adapter plate expands mounting options across multiple pistol platforms
Important Compatibility Notes
- The EPS is designed for full-size pistols with slides approximately 1.0-1.1 inches wide
- Not compatible with Glock 43X/48 MOS—these compact pistols require the smaller EPS Carry model
- Requires an adapter plate when mounting to RMR-cut slides
- Some pistols with RMR footprints using ZEV-style recoil posts may require specialized aftermarket adapter plates
Direct Mount Compatibility (K-Series Footprint)
- Shadow Systems CR920
- PSA Dagger (all sizes)
RMR Adapter Plate Required (Included)
- Sig P320 / M17 / M18
- Staccato 2011
- Most pistols with RMR-pattern optics cuts
Why We Carry It
The EPS represents a significant evolution in pistol red dot design by addressing the primary vulnerability of open-emitter sights. Holosun pioneered the enclosed pistol sight category to solve a problem competitive shooters and everyday carriers face: maintaining a clear, unobstructed dot regardless of environmental conditions. While open-emitter designs can accumulate rain, snow, or dirt that blocks the LED, the EPS’s enclosed design keeps the emitter protected behind glass. The sight’s remarkably low profile means it doesn’t just protect your dot—it does so while maintaining a sleek, snag-free carry profile that many enclosed designs can’t match. Holosun’s K-series mounting system and included RMR adapter make this one of the most versatile enclosed sights on the market.
Frequently Asked Questions
What’s the main advantage of an enclosed emitter over open-emitter red dots?
Enclosed designs prevent environmental contaminants from reaching the LED emitter. With open-emitter sights, rain, snow, mud, or even oil from your hands can land directly on the emitter window, partially or completely obscuring your dot. The EPS protects the emitter behind a sealed glass window, so you only need to wipe the exterior lens surface—the emitter itself stays clean. This design also provides better protection against impacts that might damage an exposed emitter.
Will this work with my Glock 43X MOS or Glock 48 MOS?
No, the full-size EPS is too large for the G43X/48 MOS. These compact pistols have narrower slides (approximately 0.9 inches wide) and require the smaller EPS Carry model instead. The full-size EPS is designed for pistols with slides that are 1.0-1.1 inches wide, such as the Glock 19 MOS, Sig P320, or full-size 1911 platforms.
Does Shake Awake work reliably, and will it drain my battery if the gun is in my vehicle?
Shake Awake uses a motion sensor that powers off the LED after 10 minutes of no movement (adjustable). The sensor is quite sensitive—even gentle movement will reactivate the dot instantly. Some users report occasional instances where the feature doesn’t wake immediately upon draw; if this concerns you, many shooters simply leave the optic on continuously, as the 50,000-hour battery life means a CR1620 battery can last 5+ years even with 24/7 operation at moderate brightness. Button lockout mode can also prevent accidental setting changes if you prefer leaving it powered on.
Included in the Box
- Multi Tool
- User Manual
- Lens Cloth
Specifications
Optical Data
- Reticle: 6 MOA Red Dot
- Light Wavelength: 650nm
- Reticle Color: Red
- Magnification: 1x
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Multi-Coatings: Yes
- Lens: Aspherical Glass
- Window Size: 0.63 × 0.91 inches
Electronic Data
- Power Source: Battery
- Battery Type: CR1620 Lithium
- Battery Life: Up to 50,000 hours
- Brightness Settings: 12 total (8 daylight + 4 night vision compatible)
Physical and Mechanical Data
- Housing Material: 7075-T6 Aluminum
- Surface Finish: Anodized
- Adjustment per Click: 1.5 MOA
- Windage & Elevation Travel Range: ±30 MOA
- Dimensions: 1.62 × 1.19 × 0.99 inches
- Weight: 1.4 ounces
- Mounting Footprint: Holosun K-Series (Modified RMSc)
Environment Data
- Storage Temperature: -40°F to 158°F (-40°C to 70°C)
- Working Temperature: -22°F to 140°F (-30°C to 60°C)
- Water Resistance: IPX8
- Vibration Resistance: 5000G
