Independent field journal · Practice, evidence, judgmentIssue No. 01 / Summer 2026
KGKNOWN GROUNDClarity and capability in a contested world
Newsletter
Product record · Specifications checked July 23, 2026

EPS

Enclosed full-size reflex optic.

Editorial status

current

Research record; not firsthand tested.

Key facts

optic

Weight: 1.4 oz
Dimensions: 1.63 × 1.19 × 0.99 in
Compatibility: Holosun K / RMSc-family footprint

Typical price

Not listed

Prices may change.

No merchant links are currently listed.

Description

Enclosed full-size reflex optic.

Specifications

Documented specifications for EPS
SolarYes
DesignEnclosed emitter
Window0.90 × 0.63 in
BatterySide-loading CR1620
Housing7075-T6 aluminum
Reticle2 MOA dot and 32 MOA circle
Adjustment1.5 MOA per click
Brightness8 daylight and 4 night-vision settings
Battery life50,000 hours at setting 6
Magnification
Adjustment range±30 MOA
Water resistanceIPX8
Motion activationShake Awake

Sources and verification

Reviewed pistol mounting paths

Published compatibility records for EPS
Pistol configurationResultMounting detailsVerified
Springfield Armory Echelon 4.5
Echelon 4.5 · Springfield Echelon VIS
direct mountNo 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 mountNo plate required — Pin set 3; optic-manufacturer screws may require modification.Checked July 15, 2026
Not personally tested

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