The AmeriGlo I-Dot Sights for Glock 42/43 deliver fast, accurate target acquisition with a classic dot-over-dot tritium configuration engineered specifically for compact carry pistols.
- Dot-over-dot alignment for intuitive, rapid vertical sight picture
- Green tritium front dot with .140" wide LumiGreen luminescent outline
- Green tritium rear with .165" wide square-notch for extended sight radius
- Glare-reducing undercut rear face minimizes distractions in bright conditions
- Precision-fit design made specifically for Glock 42 and Glock 43 frames
- Self-luminous tritium vials glow in low-light without batteries or activation
Who This Is For
The AmeriGlo I-Dot is an ideal upgrade for Glock 42 and 43 owners who rely on their subcompact pistol for everyday concealed carry. Whether you're a first-time handgun owner looking for a forgiving sight picture or an experienced shooter wanting faster target acquisition under stress, these tritium sights perform reliably in daylight, low-light, and near-total darkness — making them a trusted choice for home defense and personal protection.
Specifications
| Brand | AmeriGlo |
|---|---|
| Model | I-Dot |
| Compatible Firearms | Glock 42, Glock 43 |
| Front Sight | Green Tritium, .140" Wide LumiGreen Outline |
| Rear Sight | Green Tritium, .165" Wide Square Notch |
| Sight Configuration | Dot-Over-Dot (I-Dot) |
| Rear Design | Extended Square Notch, Undercut Glare Reduction |
| Luminescence | Self-Luminous Tritium (No Battery Required) |
| Color | Green / Green |
| Country of Origin | USA |
Frequently Asked Questions
Will these sights fit both the Glock 42 and Glock 43?
Yes, the AmeriGlo I-Dot sights in this configuration are specifically designed to fit both the Glock 42 (.380 ACP) and Glock 43 (9mm). They are not compatible with other Glock models, so be sure to verify your pistol model before purchasing. Installation typically requires a sight pusher tool or professional gunsmith for best results.
How long do tritium sights glow, and do they require charging?
Tritium is a self-luminous radioactive isotope that does not require exposure to light to glow — it emits light continuously through a natural process. AmeriGlo tritium sights typically have a usable glow life of approximately 12 years, though the tritium technically has a half-life of about 12.3 years and continues to function beyond that point at reduced brightness.
What is the advantage of the dot-over-dot I-Dot configuration over a three-dot sight?
The I-Dot system uses a single front dot and a single rear dot, encouraging the shooter to stack one dot directly on top of the other for a precise vertical sight picture. This eliminates the visual clutter of a three-dot system, helping shooters focus on the front sight faster — particularly under stress. The extended square-notch rear also provides a wider field of view around the front sight for quicker target acquisition.