TRUGLO Brite-Site TFO Tritium Fiber-Optic Sights for Glock 21 – Green/Yellow

The TRUGLO Brite-Site TFO (Tritium Fiber-Optic) sights combine tritium night sight technology with fiber-optic brightness for 24-hour visibility. Green front and yellow rear fiber-optic inserts deliver rapid sight acquisition in daylight, while tritium capsules provide a dependable glow in low-light and complete darkness. These sights are purpose-built for Glock 21 pistols chambered in .45 ACP.

The TFO design uses a hermetically sealed capsule to protect both the tritium vial and fiber-optic element. The fortress-style steel construction is CNC-machined for precise fit and features a snag-resistant profile suitable for concealed carry and duty use. Installation requires a sight pusher tool or gunsmith services. The contrasting green front and yellow rear configuration helps shooters naturally align the front sight during target transitions.

• Sight Type: Tritium Fiber-Optic (TFO) Combination
• Front Sight Color: Green Fiber-Optic / Tritium
• Rear Sight Color: Yellow Fiber-Optic / Tritium
• Compatible Firearm: Glock 21
• Construction: CNC-Machined Steel
• Profile: Snag-Resistant
• Installation: Requires Sight Pusher Tool or Gunsmith
• Visibility: Day and Night (24-Hour)