Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your TRUGLO Replacement 3-Dot Red Front & Green Rear Adjustable Lever Action Fiber-Optic Sight Set. These sights are designed to enhance accuracy and provide quick target acquisition in various lighting conditions for compatible lever action firearms. Please read this manual thoroughly before installation and use to ensure proper function and safety.
Important Safety Information
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Always ensure your firearm is unloaded and pointed in a safe direction before handling or performing any work on it. Wear appropriate eye protection during installation and maintenance. If you are unsure about any step, consult a qualified gunsmith.
Product Overview
The TRUGLO Fiber-Optic Sight Set consists of a front sight with a red fiber optic and a rear sight with two green fiber optics. This 3-dot system provides a clear and contrasting sight picture for improved aiming. The rear sight is adjustable for both windage and elevation, allowing for precise zeroing of your firearm.
Figure 1: Complete TRUGLO 3-Dot Fiber-Optic Sight Set, featuring the red front sight and green rear sight.
Figure 2: Detailed view of the TRUGLO rear sight, highlighting the green fiber optics and adjustment screws.
Figure 3: The front and rear sights displayed together, illustrating their compact design.
Setup and Installation
Before beginning installation, ensure your firearm is completely unloaded and safe. Always wear eye protection.
Tools Required:
- Small flat-head screwdriver
- Small hammer or mallet
- Non-marring punch (brass or nylon recommended)
- Protective material (e.g., towel, soft cloth)
- Gunsmithing vise (optional, but recommended)
Compatibility:
This sight set is designed for specific lever action rifle models. Refer to the compatibility chart below to confirm fitment for your firearm. The model TG109 is specifically for Marlin 336 Rifle Set.
Figure 4: TRUGLO Lever Action Rifle Sights Compatibility Chart. Confirm your rifle model and the corresponding TRUGLO sight model (e.g., TG109 for Marlin 336).
Installation Steps:
- Unload Firearm: Double-check that your firearm is unloaded and the chamber is clear. Remove any ammunition from the area.
- Secure Firearm: Secure the firearm in a gunsmithing vise or on a stable surface, protecting the finish with a towel or soft cloth.
- Remove Existing Sights: If replacing existing sights, carefully drift them out of their dovetail slots using a non-marring punch and a small hammer. Note the direction they were removed from, as new sights are often installed from the same direction.
- Install Front Sight:
- Align the new TRUGLO front sight with the dovetail slot on the barrel.
- Using a non-marring punch and a small hammer, gently tap the front sight into the dovetail. Apply light, even pressure. It should be a snug fit. Do not force it.
- Ensure the sight is centered on the barrel.
- Install Rear Sight:
- Align the new TRUGLO rear sight with its dovetail slot.
- Gently tap the rear sight into place using a non-marring punch and hammer.
- Once seated, tighten the small set screw on the rear sight (if present) to secure it in the dovetail. Do not overtighten.
- Initial Adjustments: The rear sight allows for windage (left/right) and elevation (up/down) adjustments.
- Windage: Use a small screwdriver to adjust the windage screw (typically on the side of the rear sight). Moving the sight in the direction you want the bullet impact to shift.
- Elevation: Use a small screwdriver to adjust the elevation screw (typically on top or front of the rear sight). Raising the sight will raise the point of impact, and lowering it will lower the point of impact.
- Final Check: Verify that both sights are securely mounted and aligned.
Note: Fine-tuning of windage and elevation will be performed at the shooting range to zero your firearm accurately. Always follow safe firearm handling practices when making adjustments at the range.
Operating Instructions
The TRUGLO 3-Dot Fiber-Optic Sight System is designed for intuitive and rapid target acquisition. To use your new sights:
- Aiming: When aiming, align the single red dot of the front sight between the two green dots of the rear sight. The three dots should form a horizontal line, with the red dot centered vertically and horizontally between the two green dots.
- Sight Picture: Focus your eye on the front sight, allowing the target and rear sight to be slightly out of focus. This ensures the clearest possible view of your aiming point.
- Fiber Optic Brightness: The fiber optics gather ambient light, making the dots glow brightly. This enhances visibility in low-light conditions and against dark backgrounds, improving target acquisition speed.
Practice aiming with your new sights to become proficient. Proper sight alignment is crucial for accuracy.
Maintenance
To ensure the longevity and optimal performance of your TRUGLO sights, follow these maintenance guidelines:
- Cleaning: Gently wipe the fiber optic rods with a soft, lint-free cloth to remove dust and debris. Avoid using harsh chemicals or abrasive materials, as these can damage the fiber optics or the sight finish.
- Inspection: Periodically inspect the sights for any signs of damage, looseness, or wear. Ensure all screws are snug.
- Storage: Store your firearm in a clean, dry environment. Avoid extreme temperatures and humidity, which can affect the materials.
Troubleshooting
If you encounter issues with your TRUGLO sights, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Sights are difficult to install or fit too tightly. | Dovetail tolerance variations. | Ensure proper alignment. Use a non-marring punch and gentle, consistent taps. If extremely tight, a qualified gunsmith may need to lightly file the sight base or dovetail. Do not force. |
| Rear sight moves after adjustment or locking. | Set screw not sufficiently tightened or stripped. | Ensure the set screw is tightened firmly but without overtightening, which can strip the threads. If the screw is stripped, contact TRUGLO support for replacement parts or professional assistance. |
| Front sight appears too high, making it difficult to zero. | Incorrect front sight height for the specific firearm model or ammunition. | Verify that you have the correct sight height for your firearm model (refer to compatibility chart). If issues persist, a different height front sight may be required. Consult a gunsmith. |
| Fiber optics are dim or not glowing. | Lack of ambient light or obstructed fiber optic rods. | Ensure the fiber optic rods are clean and exposed to sufficient ambient light. They do not glow in complete darkness unless tritium is present (which this model does not have). |
Specifications
| Feature | Detail |
|---|---|
| Brand | TRUGLO |
| Model Name | Replacement 3-Dot Red Front & Green Rear Adjustable Lever Action Fiber-Optic |
| Model Number | TG109 |
| Front Sight Color | Red Fiber Optic |
| Rear Sight Color | Green Fiber Optic |
| Front Sight Height | .343" |
| Material | Blend (Durable construction) |
| Adjustments | Full windage and elevation |
| Item Weight | 0.04 Pounds (approx. 18 grams) |
| Compatible Devices | Rifle (Lever Action) |
Warranty and Support
TRUGLO is committed to providing high-quality products. For specific warranty information or technical support, please refer to the documentation included with your purchase or visit the official TRUGLO website. You can also contact TRUGLO customer service directly for assistance with product inquiries, parts, or troubleshooting beyond this manual.
TRUGLO aims to deliver reliable, cutting-edge optics and sighting solutions that improve accuracy and performance in every shooting and hunting experience.