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EPS
The Holosun EPS-RD-MRS is a 1× enclosed-emitter pistol optic with a selectable 2 MOA dot, 32 MOA circle, or combined circle-dot reticle. Holosun documents a 7075-T6 aluminum housing, Solar Failsafe, Shake Awake, a side-loading CR1620 battery rated up to 50,000 hours at setting 6, twelve brightness settings, 1.5 MOA adjustments, a 1.4 oz weight, and IPX8 water resistance. This is a manufacturer-sourced research record; Known Ground has not marked it as personally tested.
Source-backed record
Research record; not firsthand tested.
13 documented specifications, source references, and verification dates are present. Mounting paths are reviewed separately.
optic
Weight: 1.4 oz
Dimensions: 1.63 × 1.19 × 0.99 in
Compatibility: Holosun K / RMSc-family footprint
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Description
The Holosun EPS-RD-MRS is a 1× enclosed-emitter pistol optic with a selectable 2 MOA dot, 32 MOA circle, or combined circle-dot reticle. Holosun documents a 7075-T6 aluminum housing, Solar Failsafe, Shake Awake, a side-loading CR1620 battery rated up to 50,000 hours at setting 6, twelve brightness settings, 1.5 MOA adjustments, a 1.4 oz weight, and IPX8 water resistance. This is a manufacturer-sourced research record; Known Ground has not marked it as personally tested.
Specifications
| Solar | Yes |
|---|---|
| Design | Enclosed emitter |
| Window | 0.90 × 0.63 in |
| Battery | Side-loading CR1620 |
| Housing | 7075-T6 aluminum |
| Reticle | 2 MOA dot and 32 MOA circle |
| Adjustment | 1.5 MOA per click |
| Brightness | 8 daylight and 4 night-vision settings |
| Battery life | 50,000 hours at setting 6 |
| Magnification | 1× |
| Adjustment range | ±30 MOA |
| Water resistance | IPX8 |
| Motion activation | Shake Awake |
Sources and verification
- Manufacturer product page
- Specification source — checked August 5, 2026
- Mounting-footprint source — checked August 5, 2026
Reviewed pistol mounting paths
| Pistol configuration | Result | Mounting details | Verified |
|---|---|---|---|
| Springfield Armory Echelon 4.5 Echelon 4.5 · Springfield Echelon VIS | direct mount | No plate required — Pin set 3; optic-manufacturer screws may require modification. | Checked July 15, 2026 Not personally tested |
| Springfield Armory Echelon 4.0C Echelon 4.0C · Springfield Echelon VIS | direct mount | No plate required — Pin set 3; optic-manufacturer screws may require modification. | Checked July 15, 2026 Not personally tested |