XS R3D Night Sights (brand part no. GL-R021P-6N) are built to suppressor height so they co-witness cleanly with a red dot mounted on a Glock MOS slide, covering the 17, 19, 22 through 24, 26, 27, and 31 through 36. The orange front sight glows through tritium and absorbs ambient light through a convex lens for fast target focus in any light, while an anti-reflective rear tritium lens cuts glare that would otherwise wash out the sight picture. CNC-machined steel construction and a rear sight ledge built for one-handed slide manipulation round out a sight set made for serious duty and defensive use.

Key Specifications

• Tritium-powered front sight for constant low-light visibility.
• Anti-reflective rear tritium lens cuts glare off the rear sight.
• Rear sight ledge aids one-handed slide manipulation.
• High-contrast orange front sight for fast target focus.
• Convex glow dot absorbs ambient light.
• Suppressor-height profile co-witnesses with the Trijicon RMR, SRO, Holosun 507C, and Vortex Viper.
• CNC-machined steel construction throughout.
• Backed by a 10-year warranty.
• Fits standard holster options without modification.
• Overall length of 8.1 inches.
• Weighs 0.13 pounds.

Frequently Asked Questions

Will this co-witness with a red dot? Yes, the suppressor-height profile co-witnesses with the RMR, SRO, Holosun 507C, and Vortex Viper.

Which Glock models fit? MOS-compatible Glocks including the 17, 19, 22-24, 26, 27, and 31-36.

Do the sights require batteries? No, tritium powers the front and rear inserts.

Buy the XS R3D Suppressor Height Night Sights

Running a red dot on a Glock still means falling back on iron sights when it counts, and this R3D set is built specifically for that co-witness. XS Sights machines it from steel to handle daily duty use. Browse the full gun sights lineup and order from our Lubbock, Texas gun shop for fast, insured shipping.