The TruGlo Tritium Pro High-Set Night Sights (brand part number TG231G2W) are built specifically for the large-frame Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40, and 41 (except MOS-slide models), replacing the factory plastic sights with a fixed tritium set on a Black Nitride Fortress Frame. A white-outlined green tritium front sight pairs with a plain green tritium rear, giving a consistent sight picture whether you’re on a lit range or moving through a dark hallway. The front post mounts and the rear dovetails in, both cut to the taller High profile so the sight picture co-witnesses correctly on these larger-frame Glocks. Tritium never needs a battery or a light charge, and a FOCUSLOCK ring on the front lamp locks your eye onto a single, repeatable focus point.

Key Specifications

• Purpose-built for Glock 20/21/25/28/29/30/31/32/37/40/41 (except MOS-slide models).
• Cut to a High Set profile, sized correctly for these large-frame Glock slides.
• Front sight uses a white outline ring around the tritium lamp for daylight speed.
• Front lamp glows green for a clear low-light aiming reference.
• Rear lamp also glows green, for a clean, consistent low-light picture.
• Finished with a Black Nitride Fortress Frame coating for wear and corrosion resistance.
• Front sight mounts via post, rear sight mounts via dovetail for a secure factory-style fit.
• Self-powered tritium needs no batteries and never requires a light-charging step.
• Front lamp’s FOCUSLOCK ring repeats the same point of focus on every draw.

Frequently Asked Questions

Which Glock models does this fit? It’s built for the Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40, and 41, excluding MOS-slide versions.

Why is this a High Set instead of standard height? The High profile is sized to co-witness correctly with the taller slide dimensions on these large-frame Glock models.

What is the Black Nitride Fortress Frame? It’s TruGlo’s wear- and corrosion-resistant black nitride finish applied to the sight housings for long-term durability.

Buy the TruGlo Tritium Pro High-Set Night Sights for Glock 20/21/25/28/29/30/31/32/37/40/41

Give your large-frame Glock a sight picture that works around the clock. Order this TruGlo set, part of our full gun sights selection, from our Lubbock, Texas gun shop for fast, direct shipping.