✓ Fiber Optic Daytime✓ Tritium H3 Night Glow✓ Fits Glock MOS 9mm/.40✓ Made in USA✓ Drop-In Install
✓ In Stock · Ships Same Day before 2PM EST
📦 US warehouse · 🚚 Free shipping over $99 · ↩ 30-day returns · 📞 (954) 487-9799
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Call (954) 487-9799 — we'll verify your slide cut and pick the right rear sight in 60 seconds.
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About the HiViz FASTDOT H3
The HiViz FASTDOT H3 is the premium front sight upgrade for Glock MOS pistols — combining a bright fiber optic rod for daylight target acquisition with a tritium H3 vial that glows through low-light, dusk and total darkness. One sight that works in every lighting condition, no batteries required.
Engineered specifically for the Glock MOS (Modular Optic System) slide cut in 9mm and .40 S&W, the FASTDOT installs in about 5 minutes with a standard Glock front sight tool. Whether you carry concealed, run a duty pistol or shoot competition, the FASTDOT lets your eye snap to the dot — day or night.
Why Glock Owners Choose the FASTDOT H3
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Fiber optic by day — captures ambient light, glows bright the second you index the gun
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Tritium by night — self-illuminating H3 gas, no batteries, always on
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Made in USA — 25+ year HiViz quality, lifetime brand reputation
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Glock MOS dedicated fit — designed specifically for 9mm / .40 MOS slides
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10+ year tritium half-life — useful glow well past a decade
What's Included
✓ In the Box
- HiViz FASTDOT H3 front sight
- Mounting screw
- Installation instructions
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✗ NOT Included
- Glock front sight tool (small hex)
- Matching rear sight
- Pistol
- Loctite / threadlocker (recommended)
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⏱ Install time: ~5 minutes with a Glock front sight tool. No gunsmithing required.
Specifications
| Brand |
HiViz Shooting Systems |
| Model |
FASTDOT H3 |
| Sight Type |
Front sight only |
| Illumination |
Fiber optic (day) + tritium H3 (night) |
| Tritium Lifespan |
10+ year half-life |
| Fit |
Glock MOS 9mm / .40 S&W |
| Compatible Models |
G17/19/19X/26/34/45 MOS, G22/23/35 MOS |
| Install |
Drop-in, Glock front sight tool |
| Battery |
None required (tritium self-illuminates) |
| Country of Origin |
USA |
⚖️ State Legality: Legal in all 50 states. Pistol sights are unrestricted accessories nationwide.
Complete Your Glock EDC Setup
Frequently Asked Questions
Will this fit my Glock?
Only Glock MOS (Modular Optic System) models in 9mm or .40 S&W. If your slide has the MOS optic cover plate at the rear, you're compatible. Non-MOS Glocks use a different sight cut.
Do I need a special rear sight?
This is a front sight only. Pair it with any standard Glock rear sight — the FASTDOT is designed to dominate the sight picture as the focal point.
How do fiber optic and tritium work together?
In daylight, the fiber optic rod captures ambient light and glows bright. In darkness, the tritium gas tube self-emits without any outside light source. You get a hot dot in every lighting condition.
How long does the tritium last?
10+ year half-life. The glow gradually dims but remains useful for 15-20 years total.
Is installation easy?
Drop-in with a Glock front sight tool (small hex driver). About 5 minutes. No gunsmith required. We recommend a drop of blue Loctite on the screw.
Why buy from TakTactical?
Florida family-run, BBB-certified, real shooters on staff. Ships same day before 2PM EST, free shipping $99+, 30-day returns, phone support at (954) 487-9799.
📞 (954) 487-9799 · 📧 info@taktactical.com · 🇺🇸 Florida Family-Run · BBB-Certified · Real shooters · Real support
