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Fits: S&W M&P Shield
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Hi-Viz FastDot H3 Night Sight Set S&W M&P Shield Tritium Fiber Optic MPFD21
The Hi-Viz FastDot H3 (MPFD21) is a front-and-rear night sight set for the S&W M&P platform, pairing a red tritium/fiber optic front with a green tritium/fiber optic rear. The single-dot layout eliminates the visual clutter of three-dot systems and gives you a fast, unambiguous sight picture from low light through full daylight — without batteries or external illumination. Fits M&P Compact, Full Size, Shield, and Shield Plus across all calibers; not compatible with optic-ready models, the 9EZ, or EZ 380.
Key Features
- Tritium + Fiber Optic Hybrid — Fiber optic rods gather ambient light for bright daylight visibility; tritium vials take over in darkness, glowing without batteries or charging.
- Red Front / Green Rear Color Contrast — Separate colors for front and rear dots make it immediately clear which dot to focus on, reducing the chance of misalignment under stress or low light.
- Low-Profile, Snag-Resistant Housing — Compact sight body sits flush to the slide to reduce hang-up during draw; single-dot front and rear keep the sight picture uncluttered compared to standard three-dot configurations.
- Wide M&P Platform Coverage — One set fits M&P Compact, Full Size, Shield, and Shield Plus in all calibers (excluding optic-ready, 9EZ, and EZ 380 variants).
- 12-Year Tritium Warranty — Hi-Viz warrants the tritium vials for 12 years from date of purchase. Tritium half-life is approximately 12.3 years, so brightness gradually decreases over time; the warranty period aligns with usable service life.
Compatibility
| Compatible With | S&W M&P Shield, M&P Shield Plus, M&P Compact, M&P Full Size (all calibers; excludes optic-ready, 9EZ, EZ 380) |
Specifications
| Brand | Hi-Viz |
| MPN | MPFD21 |
| UPC | 613485590364 |
| Color | Red, Green |
| Condition | New |
| Model | FASTDOT, H3 |
| Type | Night Sight |
| Sight Position | Front and Rear Set |
| Illumination | Tritium, Fiber Optic |
| Reticle Color | Red/Green |
| Dot Color | Red Front, Green Rear |
| For Gun Type | Handgun |
| Features | Illuminated |
| Sport/Activity | Shooting, Hunting |
| Country of Manufacture | United States |
⚠️ Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
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