Description
The Trijicon DI Night Sight Set brings two proven aiming technologies together in one front sight, so your dot stays visible no matter the light. During the day, the fiber optic pulls in ambient light for a crisp green point of aim. When the sun goes down, the tritium lamp takes over and glows on its own with no batteries and no charging required. The front sight blends both into a single reference point, while the black-outline rear keeps your focus where it belongs.
What Sets the DI Night Sight Apart
The standout feature here is the interchangeable fiber. A threaded retainer cap on the front sight lets you pull the fiber and drop in a fresh one in the field, and Trijicon offers replacement fibers in green, amber, orange, and red so you can tune the aiming point to your eyes and preferences. That same fiber uses a chemical and heat resistant material finished with the same proprietary technique found on the legendary ACOG, and it's capped with a tritium lamp under a sapphire jewel for even light distribution and serious brightness.
Built for Large-Frame Glock Pistols
This set is cut for the bigger Glocks and drops right into place on models 20, 21, 29, 30, 36, 40, and 41, including the S and SF variants (non-MOS). The fiber optic and tritium vial sit inside a housing machined from solid steel, so this is a sight built to hold zero and take a beating. The rear sight runs a U-notch with a steeply hooked front face, which gives you an edge to catch on a belt or boot heel for one-handed slide manipulation if your other hand is ever out of the fight.
If you carry or run one of these large-frame Glocks and want a sight that performs at high noon and midnight without asking you to think about it, the DI set covers the whole range. Plan on a gunsmith or a sight pusher for install, since these are a press-fit and worth doing right.
Key Specifications
- Manufacturer: Trijicon
- Manufacturer Part Number: 601104
- Model: GL804-C-601104
- UPC: 719307215221
- Illumination Type: Dual – Fiber Optic and Tritium
- Front Sight: Black Outline / Green Tritium / Green Fiber
- Rear Sight: Black Outline / Green Tritium, U-Notch
- Housing Material: Solid Machined Steel
- Rear Notch Width: 0.169 in (4.29mm)
- Rear Blade Height: 0.231 in (5.86mm)
- Overall Rear Height: 0.321 in (8.15mm)
- Fiber Color: Green (interchangeable)
- Fits: Glock 20, 21, 29, 30, 36, 40, 41 (incl. S/SF, non-MOS)
- Shipping Weight: 0.14 lb
What’s Included
- Trijicon DI Night Sight Set (front and rear)
- 2 green fiber replacement pieces
- T10 Torque L-key
Frequently Asked Questions
Which Glock models does the Trijicon DI Night Sight Set fit?
This set is built for large-frame Glocks and fits the 20, 21, 29, 30, 36, 40, and 41, including the S and SF variants. It does not fit MOS models. If you have a standard or small-frame Glock, Trijicon makes a separate DI set for those.
Can I change the fiber color on the DI night sights myself?
Yes. The front sight uses a threaded retainer cap that lets you remove the fiber and swap in a new one without special tools. Replacement fibers are sold in green, amber, orange, and red, so you can tailor the aiming point to your eyes and lighting.
Do the DI night sights need batteries?
No batteries and no charging required. The fiber optic gathers ambient light during the day, and the self-powered tritium lamp glows on its own in low light and total darkness. That combination keeps your aiming point visible around the clock.
Do I need a gunsmith to install the Trijicon DI Night Sight Set?
Professional installation is recommended. These sights are a press fit and go on best with a sight pusher or dovetail install tool, so most folks have a gunsmith handle it to avoid marring the slide or the sights. Doing it right ensures they seat square and hold zero.





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