1. Introduction
This manual provides detailed instructions for the proper setup, operation, maintenance, and troubleshooting of your TRUGLO Tru-Tec Micro Red Dot Sight. This compact and lightweight optic is designed for use on optic-ready handguns, rifles, and shotguns, offering a clear 3-MOA reticle for target acquisition.

Image 1.1: Front-left view of the TRUGLO Tru-Tec Micro Red Dot Sight.
2. Safety Information
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Always handle with care and wash hands thoroughly after use.
- Always ensure the firearm is unloaded and safe before installing or adjusting the red dot sight.
- Read and understand all instructions before use.
- Do not look directly into the objective lens at bright light sources.
- Keep batteries out of reach of children.
- Dispose of batteries properly according to local regulations.
3. Package Contents
Verify that all items are present in the package:
- TRUGLO TRU-TEC Micro Red Dot Sight
- RMR Mount
- CR2032 Lithium Battery (typically included, verify upon receipt)
- Mounting Hardware (screws, tools)
- Instruction Manual (this document)
4. Key Features
- Reticle: 3-MOA Red Dot for precise aiming.
- Objective Lens: 23mm x 17mm multi-coated lens.
- Brightness Control: Digital push-button with 10 settings.
- Compatibility: Designed for optic-ready pistols, rifles, and shotguns.
- Adjustments: Locking windage and elevation adjustments (1-MOA per click).
- Construction: Ultra-lightweight, CNC-machined from aircraft-grade aluminum.
- Eye Relief: Unlimited.
- Power Management: Automatic shut-off after 4 hours of inactivity to conserve battery life.
- Parallax: Parallax-free beyond 30 yards.
- Power Source: Single 3V-CR2032 lithium battery.
- Durability: Water-resistant (sealed o-ring design) and shock-resistant.

Image 4.1: View through the sight, illustrating the 3-MOA red dot reticle.
5. Setup
5.1 Battery Installation
- Locate the battery compartment, typically on the side or top of the sight.
- Using a small screwdriver or coin, carefully open the battery cap.
- Insert one CR2032 lithium battery with the positive (+) side facing up.
- Securely close the battery cap.

Image 5.1: Side view of the sight, indicating the location of the battery compartment and brightness controls.
5.2 Mounting the Sight
The Tru-Tec Micro Red Dot Sight is designed for RMR-compatible mounts. Ensure your firearm has a compatible mounting interface.
- Ensure the firearm is unloaded and pointed in a safe direction.
- Place the RMR mount onto the firearm's mounting interface.
- Align the Tru-Tec Micro Red Dot Sight onto the RMR mount.
- Secure the sight to the mount using the provided screws. Tighten screws evenly to the manufacturer's recommended torque specifications to prevent damage.
- Verify the sight is firmly attached and does not wobble.

Image 5.2: Rear view of the sight, highlighting the mounting base.
6. Operating Instructions
6.1 Power On/Off and Brightness Adjustment
- Power On: Press either the "+" or "-" button to turn on the red dot sight.
- Brightness Adjustment: Use the "+" button to increase brightness and the "-" button to decrease brightness. There are 10 brightness settings available.
- Power Off: Press and hold the "-" button for approximately 3 seconds to turn off the sight.
- Automatic Shut-Off: The sight will automatically power off after 4 hours of inactivity (no button presses) to conserve battery life.
6.2 Windage and Elevation Adjustments
The sight features locking windage and elevation adjustments. Each click adjusts the point of impact by 1 MOA (Minute of Angle).
- Locate the windage (R) and elevation (UP) adjustment turrets on the sight.
- Use a small flathead screwdriver or the appropriate tool to turn the adjustment screws.
- Elevation Adjustment: Turning the "UP" screw clockwise will move the point of impact down. Turning it counter-clockwise will move the point of impact up.
- Windage Adjustment: Turning the "R" (Right) screw clockwise will move the point of impact left. Turning it counter-clockwise will move the point of impact right.
- Make small adjustments and verify the point of impact at the range.

Image 6.1: Top view of the sight, indicating the elevation adjustment screw labeled "UP".

Image 6.2: Side view of the sight, indicating the windage adjustment screw labeled "R".
7. Maintenance
- Cleaning Lenses: Use a soft, lint-free cloth and lens cleaning solution specifically designed for optics. Avoid abrasive materials that could scratch the lens coatings.
- Cleaning Housing: Wipe the sight's housing with a damp cloth to remove dirt and debris. Do not use harsh chemicals or solvents.
- Battery Replacement: Replace the CR2032 battery when the reticle dims or fails to illuminate. Always use a fresh, high-quality battery.
- Storage: Store the sight in a cool, dry place away from direct sunlight and extreme temperatures. Remove the battery if storing for extended periods to prevent leakage.
- Inspection: Periodically check all mounting screws for tightness.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Red dot does not illuminate. | Dead or improperly installed battery. | Check battery orientation. Replace with a fresh CR2032 battery. |
| Red dot appears blurry or distorted. | Astigmatism (user's eye condition) or dirty lens. | Clean the objective lens. If the issue persists, consult an optometrist. |
| Sight loses zero or shifts point of impact. | Loose mounting screws or improper installation. | Ensure all mounting screws are tightened to specifications. Re-zero the sight. |
| Buttons are unresponsive. | Low battery or internal malfunction. | Replace battery. If issue persists, contact TRUGLO support. |
9. Specifications
- Model: TG8200B
- Reticle: 3-MOA Red Dot
- Objective Lens: 23mm x 17mm
- Brightness Settings: 10 digital settings
- Adjustment Click Value: 1 MOA
- Parallax: Free beyond 30 yards
- Battery: 1x CR2032 (3V Lithium)
- Automatic Shut-off: 4 hours
- Material: CNC-machined aircraft-grade aluminum
- Weight: Approximately 0.06 Pounds (27 grams)
- Water Resistance: Sealed O-ring design
- Mounting Type: RMR mount compatible
- Compatible Devices: Handgun, Rifle, Shotgun
- UPC: 788130028001
10. Warranty Information
The TRUGLO Tru-Tec Micro Red Dot Sight comes with a Limited Warranty. For specific details regarding coverage, duration, and how to make a claim, please refer to the official TRUGLO website or contact their customer support directly. Keep your proof of purchase for warranty purposes.
11. Customer Support
For technical assistance, parts, or service inquiries, please contact TRUGLO customer support:
- Website: Visit the official TRUGLO website for FAQs, product registration, and contact information.
- Contact: Refer to the contact section on the TRUGLO website for phone numbers or email support.
When contacting support, please have your product model number (TG8200B) and purchase date available.
