TruGlo TG109 Lever Action Rifle Sights - Black, 0.343" Red Front & Green Rear, Adjustable for Marlin 336
- Type:
- Sights - Set
- Firearm Group:
- Rifle
- Firearm Make Fit:
- Marlin
- Firearm Fit:
- Marlin 336
- Front Color:
- Red/ Fiber Optic
- Rear Color:
- Green/ Fiber Optic
- Rear Material:
- Fiber Optic
- Windage Adjustment:
- Yes
- Base Configuration:
- Dovetail
- Elevation Adjustment:
- Yes
- Frame Material:
- CNC Machined Steel
- Front Material:
- Fiber Optic
The TruGlo TG109 lever action rifle sights bring a practical upgrade to your Marlin 336, combining rugged construction with the kind of visibility you need in the field. These black sights replace factory originals and feature a red front post and green rear aperture—a proven color pairing that cuts through dim light and brush without relying on batteries or moving parts. Full windage and elevation adjustment means you can dial them in for your load and distance once, then hunt with confidence.
Built from CNC-machined steel, the TG109 is engineered to absorb the recoil of a lever gun without shifting zero or cracking. Unlike fragile fiber-optic or plastic designs, these sights handle years of hard use in rough country—exactly what hunters expect from quality iron sights. Installation takes minutes with basic tools; no gunsmithing required.
These sights are optimized for standard Marlin 336 barrels and are not compatible with carbine-profile barrels. If you run a full-length rifle, you're looking at a straightforward drop-in replacement that restores your sight picture and adds genuine field utility, especially useful in heavy cover where a scope might catch brush or fail in close quarters.
Key Features
- Red front post and green rear aperture for low-light visibility
- Full windage and elevation adjustment for custom zero
- CNC-machined steel construction for durability and recoil resistance
- Factory-style replacement for Marlin 336 rifles
- Quick installation without gunsmithing
- Black finish resists glare
Specifications
| Brand | TruGlo |
| Model | TG109 |
| Front Post Diameter | 0.343" |
| Rear Aperture Diameter | 0.035" |
| Front Post Color | Red |
| Rear Aperture Color | Green |
| Finish | Black |
| Compatibility | Marlin 336 (standard barrel only, not carbine) |
| Adjustments | Windage and Elevation |
Frequently Asked Questions
Are TruGlo TG109 sights compatible with my Marlin 336?
Yes, the TG109 is designed as a direct replacement for Marlin 336 factory sights. However, they are not compatible with Marlin 336 carbine barrels—only standard-length barrels.
Can I install these sights myself?
Yes. The TG109 is engineered for straightforward installation and can be mounted in minutes with basic tools. No gunsmithing or professional installation is necessary.
What colors are the front and rear sights?
The front post is red and the rear aperture is green. This color contrast is designed to enhance visibility in low-light hunting conditions and heavily wooded terrain.
Can I adjust these sights for windage and elevation?
Yes. The TG109 offers full windage and elevation adjustment, allowing you to dial in your zero once you have them mounted and ready to shoot.

