TruGlo TFX TG13SG4A Night Sights - Green Tritium Fiber Optic

The TruGlo TFX TG13SG4A combines tritium and fiber optic technology to deliver 24-hour sight visibility in any lighting condition. This sight set features green tritium vials encased in a virtually indestructible configuration that maintains brightness for over 12 years without batteries or external light sources.

What Makes This Different

Unlike traditional night sights that rely solely on tritium or basic fiber optics, the TFX series integrates both technologies into a single sight body. The fiber optic element captures ambient light during daylight hours while the tritium provides consistent illumination in complete darkness. This dual-illumination system eliminates the visibility gaps common with single-technology sights, ensuring rapid target acquisition across all lighting scenarios.

Key Features

• Green tritium vials rated for 12+ years of consistent brightness
• Fiber optic light pipes for enhanced daylight visibility
• White outline front sight for improved contrast and alignment
• CNC-machined steel construction with protective sight capsule
• Snag-resistant design with rounded edges
• Fits standard holsters without modification
• No-gunsmithing installation on most firearms

The TFX sight system performs consistently across temperature extremes from -20°F to 150°F, maintaining zero shift and brightness stability. Law enforcement agencies report improved first-shot accuracy in low-light scenarios, while competitive shooters appreciate the crisp sight picture during rapid-fire sequences. The sealed tritium capsules resist impact damage and maintain gas pressure even after thousands of rounds.

Technical Specs

• Tritium Color: Green front and rear
• Construction: CNC-machined steel with aluminum light pipes
• Tritium Half-Life: 12.3 years
• Operating Temperature: -20°F to 150°F
• Front Sight: White outline configuration
• Rear Sight: Green tritium with fiber optic
• Installation: Drop-in replacement for factory sights
• Warranty: Limited lifetime warranty

The TG13SG4A represents proven sight technology backed by extensive field testing and real-world performance data. Professional users choose TFX sights for their reliability and consistent performance when accuracy matters most.