XS DXT2 Big Dot Night Sights (brand part no. GL0011S5Y) give the Glock 42 and 43 a sight picture built to hold up under stress, when a shooter’s focus naturally narrows to the front sight. The oversized yellow dot stays visible in that scenario precisely because it’s big and high-contrast, and its convex lens soaks up ambient light for a low-light glow that doesn’t fade fast. Both front and rear inserts run on tritium, so the set is always ready without batteries or a charge cycle.

Key Specifications

• Big Dot front sight stays visible even when focus narrows under stress.
• High-contrast yellow dot is tuned for bright daylight and low light alike.
• Convex lens absorbs ambient light and glows after dark.
• Tritium powers both the front and rear inserts.
• Steel construction front and rear for durability.
• Fits standard concealment holsters without modification.
• Purpose-fit for the Glock 42 and 43.
• Overall sight length of 8.1 inches.
• Weighs 0.12 pounds as a complete set.

Frequently Asked Questions

Which pistols does this set fit? The Glock 42 and 43.

Does the Big Dot need batteries? No, tritium powers the glow continuously.

Will it fit a standard holster? Yes, the profile is sized to clear common concealment holsters.

Buy the XS DXT2 Big Dot Night Sights

When a defensive shot has to happen fast, a big, high-contrast dot beats hunting for a smaller front blade. XS Sights built this set specifically around that moment. Browse the full gun sights lineup and order from our Lubbock, Texas gun shop for fast, insured shipping.