XS DXT2 Big Dot Night Sights (brand part no. GL-0010S-5N) are sized for large-frame Glock pistols, covering the 20, 21, 29, 30, 30S, 37, and 41. The oversized orange front dot is built to stay visible even when a shooter’s focus narrows under stress, and its convex lens absorbs ambient light for a low-light glow that carries well after sunset. Both front and rear inserts run on tritium so the set is always ready, no batteries or charging required.

Key Specifications

• Big Dot front sight stays visible when focus narrows under stress.
• High-contrast orange dot for bright daylight and low light.
• Convex lens absorbs ambient light and glows after dark.
• Fits standard concealment holsters without modification.
• Sized for large-frame Glocks: 20, 21, 29, 30, 30S, 37, and 41.
• Steel construction with tritium front and rear.
• Overall length of 8.10 inches.
• Weighs 0.12 pounds.
• Sold as a complete defensive express set, front and rear included.

Frequently Asked Questions

Which Glock models fit this set? The large-frame 20, 21, 29, 30, 30S, 37, and 41.

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

Will it fit a duty holster? Yes, the profile clears standard holsters without modification.

Buy the XS DXT2 Big Dot Night Sights

Large-frame Glocks deserve a sight built to their exact dovetail, and this orange Big Dot set is cut specifically for that family. XS Sights backs it with proven tritium construction. Browse the full gun sights lineup and order from our Lubbock, Texas gun shop for fast, insured shipping.