The Holosun ARO MRS green dot sight is a compact enclosed optic for rifles and PCCs, with a high-visibility green reticle. Its sealed 22mm 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
Prefer red? See the ARO MRS red. Want a single dot? The ARO GR2. Want a bigger window and solar? Step up to the AEMS line. Browse all enclosed red dot sights, build via AR-15 optics, and read green vs red dot sights.
Key Features
- Compact 22mm enclosed emitter; green reticle
- 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 (green) |
| Objective |
22 mm (enclosed) |
| Brightness |
8 day / 2 NV |
| Click Value |
1 MOA |
| Battery |
CR2032 (up to 50,000 h) |
| Mount |
Lower-1/3 co-witness + low mount |
| Housing |
Aluminium, IP67 |
What's Included
- Holosun ARO MRS green 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.
Green or red?
Many shooters find green appears brighter; otherwise identical to the red ARO MRS.
Does it co-witness?
Yes — it ships with a lower-1/3 co-witness mount and a low mount.
