Introduction
This manual provides comprehensive instructions for the proper setup, operation, maintenance, and troubleshooting of your Holosun ARO-MRS-GR Advanced Rifle Optic. Please read this manual thoroughly before using the device to ensure safe and optimal performance.
Figure 1: Holosun ARO-MRS-GR Advanced Rifle Optic. This image shows the optic from a front-angled perspective, highlighting its compact design and the objective lens.
Safety Information
Always handle firearms and optics responsibly. Ensure the firearm is unloaded and safe before mounting or adjusting the optic. Do not look directly into the sun through the optic, as this can cause permanent eye damage.
Package Contents
Verify that all components are present in your package:
- Holosun ARO-MRS-GR Optic
- 1.63" Lower 1/3 Co-witness Picatinny Mount
- 1.05" Low Picatinny Mount
- Lens Cleaning Cloth
- Windage & Elevation Multi-tool
- CR2032 Battery (pre-installed or included)
Setup
Mounting the Optic
The ARO-MRS-GR comes with two Picatinny mounts: a 1.63" lower 1/3 co-witness mount and a 1.05" low mount. Choose the mount that best suits your rifle and preferred sight picture.
- Ensure the firearm is unloaded and pointed in a safe direction.
- Select the desired mount. Attach the optic to the mount using the provided screws, ensuring they are tightened securely.
- Place the assembled optic and mount onto the Picatinny rail of your rifle. Position it to achieve optimal eye relief.
- Tighten the mount's clamping mechanism to secure the optic firmly to the rail. Do not overtighten.
Figure 2: Holosun ARO-MRS-GR with a mounted base. This image illustrates the optic attached to one of the included Picatinny mounts, ready for installation on a firearm rail.
Battery Installation
The ARO-MRS-GR uses a CR2032 battery. The side-loading battery tray allows for easy replacement without removing the optic from the firearm.
- Locate the battery tray on the side of the optic.
- Use a small flat-head tool or coin to open the battery tray.
- Insert a fresh CR2032 battery with the positive (+) side facing up.
- Close the battery tray securely.
Operating Instructions
Power On/Off and Shake Awake
The optic features Holosun's Shake Awake technology. It will automatically power on when motion is detected and enter sleep mode after a period of inactivity to conserve battery life. To manually power on, press any brightness button. To manually power off, press and hold the "-" button for 3 seconds.
Brightness Adjustment
The ARO-MRS-GR has 12 brightness settings: 10 for daylight and 2 for night vision compatibility.
- Press the "+" button to increase brightness.
- Press the "-" button to decrease brightness.
Reticle Selection
The Multi-Reticle System (MRS) allows you to switch between a 2 MOA green dot and a 65 MOA circle with a 2 MOA green dot.
- To cycle through reticle options, press and hold the "-" button for approximately 1 second (after powering on, but before powering off).
Windage and Elevation Adjustment
Adjustments for windage (horizontal) and elevation (vertical) are made using the included multi-tool. Each click typically represents 0.5 MOA (Minute of Angle) adjustment.
- Elevation Adjustment: Use the multi-tool to turn the elevation turret (usually on top of the optic). Turning clockwise typically moves the point of impact down, counter-clockwise moves it up.
- Windage Adjustment: Use the multi-tool to turn the windage turret (usually on the side of the optic). Turning clockwise typically moves the point of impact right, counter-clockwise moves it left.
Perform zeroing procedures at a shooting range following standard safety protocols.
Maintenance
Cleaning the Lenses
Use the provided lens cleaning cloth or a soft, lint-free cloth to gently wipe the objective and ocular lenses. For stubborn smudges, a small amount of lens cleaning solution designed for optics can be applied to the cloth, not directly to the lens.
General Care
- Keep the optic covered with lens caps when not in use to protect the lenses.
- Store the optic in a dry, cool place, away from direct sunlight and extreme temperatures.
- Periodically check the mounting screws for tightness, especially after heavy use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Reticle is dim or not visible. | Low battery; brightness setting too low; optic in sleep mode. | Replace battery; increase brightness using the "+" button; move the optic to activate Shake Awake or press any button. |
| Reticle flickers or turns off intermittently. | Loose battery; low battery; poor contact. | Ensure battery tray is fully closed and battery is seated correctly; replace battery. |
| Optic does not hold zero. | Loose mount; damaged optic. | Check and tighten mounting screws; if problem persists, contact Holosun support. |
| Lenses are blurry or dirty. | Dust, smudges, or debris on lenses. | Clean lenses using the provided cloth or a suitable lens cleaning solution. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | ARO-MRS-GR |
| Reticle | 2 MOA Green Dot & 65 MOA Circle |
| Window Size | 22mm Objective Lens Diameter (0.87 Inches) |
| Brightness Settings | 10 Daylight, 2 Night Vision Compatible |
| Battery Type | CR2032 |
| Battery Life | Up to 50,000 hours (Setting 6) |
| Housing Material | Aluminum |
| Weight | 3.38 Ounces |
| Waterproof Rating | IP67 |
| Mounting Type | Picatinny Mount (1.63" lower 1/3 co-witness & 1.05" low mounts included) |
| Shake Awake | Yes |
Warranty Information
The Holosun ARO-MRS-GR Advanced Rifle Optic is covered by a Lifetime Manufacturer Defective Warranty. This warranty covers defects in materials and workmanship under normal use. For specific terms and conditions, or to initiate a warranty claim, please refer to the official Holosun website or contact their customer support directly.
Customer Support
For further assistance, technical support, or inquiries regarding your Holosun ARO-MRS-GR optic, please visit the official Holosun website or contact their customer service department. Contact information can typically be found on the manufacturer's website.
You can also visit the HOLOSUN Store on Amazon for more product information and resources.
