The Holosun EPS CORE Red Dot Sight (SKU EPS-CORE-RD-MRS) is a 1× enclosed emitter pistol red dot sight running the red Multi-Reticle System (a 2 MOA dot, a 32 MOA circle or both as a circle-dot) on a direct RMSc footprint, in a Hard Anodized 6061 aluminium housing measuring 1.61 × 1.18 × 0.97 in (40.9 × 30.0 × 24.6 mm) and weighing 1.4 oz (40 g).
EPS CORE is the essentials-only version of the enclosed EPS: it drops Solar Failsafe and the premium housing alloy but keeps the sealed emitter that is the whole reason to buy one. The direct RMSc footprint mounts to slim-slide pistols with no adapter plate at all, and the side-loading CR1620 runs up to 50,000 hours with Shake Awake and brightness memory recall.
How It Compares
Prefer a single fixed aiming point? The EPS CORE 3 MOA red dot sight costs less. The same Multi-Reticle System in green is the EPS CORE green dot sight with Multi-Reticle System, and in gold the EPS CORE gold dot sight with Multi-Reticle System. Want the premium 7075-T6 housing and Solar Failsafe? Step up to the EPS Carry red dot sight with Multi-Reticle System. Browse all enclosed red dot sights and RMSc footprint optics, or read our enclosed versus open emitter comparison.
Ideal For
- Airsoft gas blowback pistols where a sealed emitter beats an open one outdoors
- Practical shotgun and 3-Gun stages where the 32 MOA circle speeds up close targets
- Section 1 long-barrelled pistols and licensed revolvers cut for RMSc, with no adapter needed
- A first enclosed optic on a budget, without giving up the sealed window
Key Features
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Reticle: Multi-Reticle System — 2 MOA dot, 32 MOA circle or 32 MOA circle-dot, red
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Emitter: Fully enclosed and sealed against dust, lint and moisture
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Footprint: Direct RMSc footprint — mounts to slim-slide pistols with no adapter plate
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Power: Side-loading CR1620 tray with Shake Awake, up to 50,000 hours
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Illumination: 8 daylight and 4 night vision settings with brightness memory recall
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Adjustment: 1.5 MOA per click with ±30 MOA of travel
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Window: 0.90 × 0.63 in (22.9 × 16.0 mm)
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Housing: Hard Anodized 6061 aluminium rated IPX8 and 5000G shock
Technical Specifications
| Optic Type |
Enclosed emitter red dot sight |
| Magnification |
1× (non-magnifying) |
| Reticle |
Multi-Reticle System — 2 MOA dot / 32 MOA circle, red |
| Brightness |
8 daylight and 4 night vision settings, with memory recall |
| Battery |
CR1620 in a side-loading tray, up to 50,000 hours |
| Footprint |
Direct RMSc footprint (no adapter plate required) |
| Window Size |
0.90 × 0.63 in (22.9 × 16.0 mm) |
| Adjustment |
1.5 MOA per click, ±30 MOA total travel |
| Dimensions |
1.61 × 1.18 × 0.97 in (40.9 × 30.0 × 24.6 mm) |
| Weight |
1.4 oz (40 g) |
| Housing |
Hard Anodized 6061 aluminium |
| Durability |
IPX8 water resistance, 5000G shock |
| SKU / MPN / UPC |
EPS-CORE-RD-MRS / EPS-CORE-RD-MRS / 810047074779 |
What's Included
- Holosun EPS CORE red dot sight (EPS-CORE-RD-MRS)
- Multi-tool
- Lens cloth
- User manual
- Warranty card
Warranty
Covered by Holosun's manufacturer's warranty. Keep your order confirmation as proof of purchase and register the optic with Holosun after fitting; we handle warranty claims for you from the UK.
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's warranty.
Frequently Asked Questions
Is the Holosun EPS CORE an RMSc or an RMR footprint optic?
The Holosun EPS CORE uses a direct RMSc footprint, so it mounts straight onto RMSc-cut slim-slide pistols with no adapter plate, and it is not an RMR-pattern optic. Our RMR versus RMSc footprint guide explains how to tell which cut your pistol has.
Will the EPS-CORE-RD-MRS fit a Glock 43X, SIG P365 or Springfield Hellcat?
The EPS CORE uses the RMSc footprint, which is the pattern cut into slim-slide optics-ready pistols including the Glock 43X/48 MOS, the SIG Sauer P365 series and the Springfield Hellcat OSP. Slide cuts vary between production runs, so confirm your pistol's cut before ordering.
Which reticles does the EPS-CORE-RD-MRS Multi-Reticle System give you?
The Holosun EPS CORE MRS switches between a 2 MOA red dot, a 32 MOA red circle, and both combined as a circle-dot.
What battery does the Holosun EPS CORE use and how is it changed?
The EPS CORE takes a single CR1620 coin cell in a side-loading tray, so the battery can be replaced without removing the sight or losing your zero, and one cell gives up to 50,000 hours.
What is the difference between the EPS CORE and the EPS Carry?
The EPS CORE is the essentials-only model with a Hard Anodized 6061 aluminium housing and a direct RMSc footprint, while the EPS Carry uses a 7075-T6 housing and includes an RMSc-to-K adapter plate.
Does the Holosun EPS CORE have Solar Failsafe?
No — the EPS CORE runs on its CR1620 battery with Shake Awake motion activation. Solar Failsafe is fitted to the Multi-Reticle System versions of the EPS and EPS Carry instead.
