Holosun EPS Core | Enclosed K-Footprint Pistol Optic | Granite Ridge Defense

The EPS CORE delivers the wide viewing performance of a full-size EPS lens in a compact RMSc-footprint optic built for slim pistols and concealed-carry setups.

Designed with an enclosed emitter and intelligent brightness control, it provides a clear, consistent sight picture while maintaining the durability and reliability shooters expect from the EPS platform.

→ Multi-Reticle System or 3 MOA Dot
Selectable 2 MOA dot, 32 MOA circle, or circle-dot combination for precision aiming or rapid target acquisition on the MRS, 3 MOA dot on the 3 MOA version.

→ Full-Size EPS Viewing Lens
Expanded viewing window delivers a larger sight picture while maintaining a compact footprint for slim pistols.

→ Enclosed Emitter Design
Sealed housing protects the emitter from dust, debris, and moisture for dependable performance.

→ Shake Awake
Solar backup supports reticle performance on the MRS while motion activation keeps the optic instantly ready.

→ Side-Loading CR1620 Battery
Battery replacement without removing the optic, with up to 50,000 hours of runtime.

→ Carry-Ready Durability & RMSc Footprint
6061-T6 aluminum housing with IPX8 waterproofing and 5000G vibration resistance, compatible with RMSc footprint slim-slide pistols.

Granite Ridge's Take

The Holosun EPS Core brings the full-size EPS viewing window into a compact K-footprint housing designed for slim pistols and carry-oriented setups. That makes it an appealing middle ground for shooters who want a larger sight picture without moving to a wider full-size mounting footprint. The EPS Core is offered in red, green and gold reticle colors, with either a simple 3 MOA dot or Holosun’s Multi-Reticle System depending on the model. Its enclosed-emitter design keeps the sighting system protected from dust, debris and moisture while maintaining a low-profile carry format.

Buying & Compatibility Notes

The EPS Core uses Holosun’s K/RMSc-style footprint, so confirm whether your slide accepts that footprint directly or requires an adapter plate. All EPS Core models use the full-size EPS lens, a side-loading CR1620 battery, Shake Awake and an automatic-brightness system. MRS versions add selectable 2 MOA dot, 32 MOA circle and circle-dot reticles plus Solar Failsafe; 3 MOA models keep the reticle simpler. If you are comparing it with the standard EPS, the EPS Core is aimed more directly at slim-slide compatibility while retaining a larger viewing window.

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Also explore Pistol Optics, Optic Adapter Plates, Holosun EPS, and Holosun EPS Carry for compatible options, comparisons, and related products.