The AmeriGlo GL-105 i-Dot Night Sights are a popular aftermarket upgrade specifically designed for slimline Glock models, including the Glock 42, 43, 43X, and 48. They are well-regarded for their "dot-over-dot" configuration, which is designed to be faster and more intuitive than traditional three-dot systems.
Key Specifications
- Design: Dot-over-dot (single tritium lamp in the rear, single tritium lamp in the front).
- Front Sight: Green Tritium with a White photoluminescent outline (Width: 0.140").
- Rear Sight: Single Green Tritium lamp with a Square notch (Notch Width: 0.165").
- Material: CNC-machined steel.
- Compatibility: Glock 42, 43, 43X, and 48 (including MOS models).
Features & Benefits
- Rapid Target Acquisition: The vertical alignment (stacking one dot on top of the other) is often preferred for defensive shooting as it simplifies the sight picture and reduces "visual noise" compared to three-dot sights.
- Low-Light Performance: Utilizes Swiss-made tritium inserts (provided by Trijicon) that glow in complete darkness without needing a battery or external light source.
- Daytime Visibility: The white outline on the front sight provides a high-contrast point of reference for daylight shooting.
- One-Handed Manipulation: The rear sight features a 90° "tactical" ledge (undercut face), allowing the shooter to rack the slide against a belt, boot, or table if one hand is incapacitated.
- Sight Radius: The rear sight is slightly extended to maximize the sight radius on these smaller, short-barreled pistols.
Pros & Cons
| Pros | Cons |
| Faster vertical alignment for many shooters | May require a short learning curve if transitioning from 3-dot sights |
| High-quality steel construction (replaces factory plastic) | The wide notch (0.165") favors speed over long-distance surgical precision |
| 12-year warranty on tritium lamps | Front sight white outline is not as bright in transitional light as "LumiGreen" or Orange versions (GL-205/305) |
