Ameriglo GL391 Optic Compatible Sight Set for Glock XL Tall - Green Tritium LumiGreen Outline Front / Green Tritium i-Dot Rear

The Ameriglo GL391 is an optic-compatible iron sight set designed for Glock pistols, built to deliver a precise, elevated co-witness sight picture when paired with a slide-mounted red dot. Machined from steel and finished in black, the set is configured in the i-Dot style with an XL Tall sight height so the front and rear remain visible through most pistol red dot housings as reliable backup or co-witness iron sights.

The front sight carries a green Tritium lamp encircled by a LumiGreen photoluminescent outline, while the rear uses a single green Tritium dot in the i-Dot configuration. Both lamps charge from ambient light and glow steadily in low-light and no-light conditions, giving the GL391 practical utility as a backup sighting system for carry, home defense, and duty pistols. The clean black finish blends with factory and aftermarket Glock slides.

Engineered to fit Glock Gen 1-5 pistols, the GL391 is a direct fit for Glock MOS slides, and the taller stance supports red dots that sit higher above the bore. Installation follows the standard Glock pattern: the rear slips into the factory rear dovetail and the front post presses into the standard front slot. This listing is for the complete front and rear sight set as supplied by Ameriglo.