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The AmeriGlo GL331 is a set of XL Tall optic-compatible night sights built for one job: giving you a reliable iron sight picture that clears the top of a pistol-mounted red dot or a suppressor. The front sight runs .315" tall with a green tritium lamp wrapped in an orange outline, while the rear sits at .392" with green tritium dots and white outlines. That extra height is what lets the irons peek up into the window of your optic, so if the dot ever fails or the glass fogs, you already have a usable sight picture waiting.
The standout feature here is the front dot. That orange ring around the green tritium makes the front sight jump out in daylight, which is exactly what you want your eye tracking under speed. When the sun goes down, the Swiss-made tritium takes over on both front and rear, glowing on its own with no batteries or charging needed. The three-dot layout keeps alignment quick and intuitive whether you are running the dot or falling back to irons.
These are machined from steel with a matte black finish, so they hold up to holster wear and slide cycling. They fit the vast majority of Glock Gen 1 through Gen 5 pistols and drop right onto MOS slides, covering models like the 17, 19, 22, 26, 34, and plenty more. The two exceptions to keep in mind are the slimline 42, 43, 43X, and 48. Because of the suppressor-height profile, they play well with common footprints including the Aimpoint Acro, Holosun 509T, and Steiner MPS.
If you are setting up a red dot Glock and want a proper backup sight picture that does not compromise on visibility, this is a solid, no-nonsense choice. Keep in mind a sight pusher or a trip to a gunsmith makes install a whole lot easier than trying to hammer them on.
Yes, that is exactly what the XL Tall height is designed for. The .315" front and .392" rear sit high enough to appear inside the window of most slide-mounted micro red dots, giving you a co-witness sight picture. They also pair well with Aimpoint Acro, Holosun 509T, and Steiner MPS footprints.
The GL331 fits the large majority of Glock Gen 1 through Gen 5 pistols, including MOS slides, covering models like the 17, 19, 22, 26, 34, and many others. The pistols it does not fit are the slimline 42, 43, 43X, and 48. If you are unsure about your specific slide, double-check your exact model before ordering.
No. Both the front and rear sights use Swiss-made tritium, which glows on its own with no batteries and no need to charge them under a light. The tritium provides a steady, self-powered glow for low-light and nighttime use for years.
You can, but it goes much smoother with the right tools. The rear sight benefits from a sight pusher, and the front typically needs a Glock front sight tool. Many folks just have a local gunsmith press them on to avoid marring the slide or the sights.
| UPC | 644406904595 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GL331 |
| Shipping Weight | 0.1 |
| Style | Optic-Compatible |
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