The Holosun ARO MRS is a compact enclosed red dot sight for rifles and PCCs. Its 22mm sealed housing gives a wide field of view in a light, rugged package — sealed reliability at an accessible price.
The Multi-Reticle System offers a 2 MOA dot, 65 MOA circle, or circle-dot, and Shake Awake delivers years of runtime with instant-on readiness.
How It Compares
Want a larger window and solar? Step up to the AEMS line. Browse more Holosun rifle red dots, all enclosed red dot sights, and build via AR-15 optics. New to optic types? Read best AR-15 optics.
Ideal For
- AR-15s and PCC builds
- Training and tactical setups
- Shooters wanting sealed reliability on a budget
Key Features
- Compact 22mm enclosed emitter
- Multi-Reticle System (2 MOA / 65 MOA / circle-dot)
- Shake Awake motion activation
- Lower-1/3 co-witness + low mount included
- Up to 50,000 hours; IP67
Technical Specifications
| Reticle |
MRS — 2 MOA dot / 65 MOA circle (red) |
| Objective |
22 mm (enclosed) |
| Battery |
CR2032 — up to 50,000 hours |
| Brightness |
10 (8 day / 2 NV) |
| Click Value |
1 MOA |
| Mount |
Lower-1/3 co-witness + low mount |
| Housing |
Aluminium, IP67 |
| Eye Relief |
Unlimited |
What's Included
- Holosun ARO MRS red dot
- Lower-1/3 mount + low mount
- CR2032 battery, lens cloth, manual
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 it enclosed?
Yes — a sealed 22mm emitter for all-weather reliability in a compact size.
What reticles does it offer?
A 2 MOA dot, a 65 MOA circle, or the circle-dot combined.
Does it co-witness?
Yes — it ships with a lower-1/3 co-witness mount and a low mount.
