Holosun EPS (full size) vs 509T

Published on June 28, 2023
Duration: 7:14

The Holosun EPS offers an enclosed emitter design with a K-cut footprint, aiming for a low deck height. While performance is comparable to the 509T, direct mounting on full-size pistols is limited, often requiring custom milling. Shadow Systems provides a specific spacer for their MR920 series to ensure a secure K-cut optic mount.

Quick Summary

The Holosun EPS offers an enclosed emitter and uses the K-cut footprint with a CR1620 battery for a low deck height, comparable in performance to the 509T. However, direct mounting on full-size pistols is limited, often requiring custom milling.

Chapters

  1. 00:00Intro: Holosun EPS Series & K-Cut
  2. 00:32Advantage: Enclosed Emitter Design
  3. 00:54EPS Design: Battery & Deck Height
  4. 02:08Mounting Challenges: K-Cut Footprint
  5. 03:30EPS vs. 509T Performance Comparison
  6. 05:04Shadow Systems MR920 Integration
  7. 05:45EPS Reticle Options & Features

Frequently Asked Questions

What is the main advantage of the Holosun EPS series?

The primary advantage of the Holosun EPS series is its enclosed emitter design, which protects the emitter from debris and moisture. It also allows for direct mounting to slides cut for the Holosun K-cut (modified RMSc) footprint, aiming for a low deck height.

How does the Holosun EPS compare to the Holosun 509T?

The Holosun EPS offers nearly identical performance to the 509T X2 in terms of glass clarity, tint, and night vision capability. The EPS is essentially designed as a direct-mount replacement for the 509T, but uses the K-cut footprint instead of the 509T's proprietary mount.

What are the mounting challenges for the Holosun EPS?

While the EPS uses the K-cut footprint, few full-size pistol slides are factory-cut for it. This often requires users to seek custom slide milling or use adapter plates, though adapter plates can negate the benefit of the optic's low deck height.

What battery does the Holosun EPS use and why?

The Holosun EPS uses a CR1620 battery. This smaller battery size was chosen to help achieve the optic's compact dimensions and low deck height, allowing for better compatibility with standard iron sights.

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