HOLOSUN HE507K-GR X2
HOLOSUN HE507K-GR X2 / HS507K X2 Multi-Reticle Open Reflex Pistol Sight User Manual
Model: HE507K-GR X2
Introduction
This manual provides comprehensive instructions for the proper setup, operation, and maintenance of your HOLOSUN HE507K-GR X2 / HS507K X2 Multi-Reticle Open Reflex Pistol Sight. Designed for subcompact pistol applications, this sight features advanced technologies such as the Multi-Reticle System (MRS), Shake-Awake, and a durable 7075 Aluminum housing. Please read this manual thoroughly before using the product to ensure safe and effective operation.

Image: HOLOSUN HE507K-GR X2 Open Reflex Pistol Sight, showing the compact design and optical lens.
Setup
Mounting the Sight
The HE507K-GR X2 / HS507K X2 utilizes Holosun's K footprint. It is a direct fit for P365X/XL and other slides with a modified RMSc footprint. For other handgun models, an adapter plate may be required. Ensure the mounting surface is clean and free of debris before installation. Use the provided screws and apply appropriate torque as specified by your firearm's manufacturer or the sight's instructions.

Image: Holosun K-Series Fitment Chart detailing the modified RMSc footprint pattern and recoil grooves for proper mounting.

Image: Holosun K-Series Fitment Chart listing handgun models that are a direct fit and those requiring an adapter plate for the K-Series sight.
Battery Installation
The sight is powered by a CR1632 battery, housed in a side-mounted tray for easy replacement. To install or replace the battery, use a small flathead screwdriver to open the battery tray. Insert the CR1632 battery with the positive (+) side facing up. Close the tray securely.
Zeroing and Adjustments
The sight features windage and elevation adjustments. Use a small flathead screwdriver or the included multi-tool to make adjustments. Each click typically corresponds to 1 MOA. Adjust the windage (left/right) and elevation (up/down) until the reticle is zeroed to your desired distance. Always perform zeroing at a safe and designated shooting range.

Image: Top view of the sight, highlighting the windage and elevation adjustment screws for precise zeroing.
Operating the Sight
Power On/Off and Shake-Awake™ Technology
The sight incorporates Shake-Awake Technology to conserve battery life. The LED automatically deactivates when the optic is not in use and instantly reactivates with the slightest motion. This ensures the sight is ready when needed without manual power management. To manually turn off the sight, press and hold the "-" (minus) button for several seconds until the reticle disappears. To turn it back on, press either the "+" or "-" button.

Image: Diagram explaining the functionality of Shake-Awake Technology for battery conservation and the Multi-Reticle System for versatile aiming options.
Brightness Adjustment
Use the "+" (plus) and "-" (minus) buttons located on the side of the sight to adjust the reticle brightness. There are 12 brightness settings, including 10 for daylight and 2 for night vision compatibility, allowing for optimal visibility in various lighting conditions.
Multi-Reticle System (MRS)
The MRS allows you to select between different reticle options: a 2 MOA dot, a 32 MOA circle, or a 2 MOA dot within a 32 MOA circle. To cycle through the reticle options, press and hold the "+" (plus) button for approximately 3 seconds. This feature provides flexibility for different shooting scenarios and preferences.

Image: Illustration demonstrating the available reticle options: a green 2 MOA dot, a 32 MOA circle, and the combination of both.
Lock Mode
The sight features a Lock Mode that prevents inadvertent setting changes. To activate Lock Mode, press and hold both the "+" and "-" buttons simultaneously for approximately 3 seconds. Repeat the process to unlock the sight.
Maintenance
Cleaning
To clean the optical lenses, use a soft, lint-free cloth and lens cleaning solution. Avoid using harsh chemicals or abrasive materials that could damage the coatings. For the housing, wipe with a damp cloth and mild soap if necessary. Ensure all surfaces are dry before storage.
Battery Replacement
Replace the CR1632 battery when the reticle dims significantly or fails to illuminate. The side-mounted tray allows for easy battery access without removing the sight from the firearm. Always use a fresh, high-quality battery for optimal performance.
Troubleshooting
- Reticle Not Visible: Check battery installation and ensure it is fresh. Verify the sight is not in Lock Mode. Adjust brightness settings.
- Reticle Appears Blurry/Distorted: Ensure the lens is clean. Adjust brightness. If you wear corrective lenses, ensure they are clean and properly worn.
- Inconsistent Zero: Ensure the sight is securely mounted to the firearm. Check mounting screws for proper torque. Verify the firearm itself is functioning correctly.
- Buttons Unresponsive: Check if the sight is in Lock Mode. If so, unlock it by pressing both buttons simultaneously.
Specifications
| Feature | Description |
|---|---|
| Model | HE507K-GR X2 |
| Reticle | Green 2 MOA Dot & 32 MOA Circle (Multi-Reticle System) |
| Light Wavelength | 540nm |
| Magnification | 1x |
| Eye Relief | Unlimited |
| Parallax | Parallax Free |
| Power Source | Battery |
| Battery Type | CR1632 |
| Battery Life | Up to 50,000 hours |
| Brightness Settings | 10 Daylight & 2 NV Compatible |
| Window Size | 0.58 x 0.77 inches |
| Housing Material | 7075 T6 Aluminum |
| Surface Finish | Anodize |
| Adjustment per Click | 1 MOA |
| W&E Travel Range | ±30 MOA |
| Item Weight | 27.22 g |

Image: Diagram highlighting the benefits of Super LED technology for brightness and battery life, and Multilayer Reflective Glass for clarity and durability.
Warranty and Support
For detailed warranty information and customer support, please refer to the official HOLOSUN manufacturer's website or contact their customer service directly. The product is covered by the manufacturer's warranty as specified at the time of purchase.
You can visit the official HOLOSUN store for more information: HOLOSUN Store
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