Night Fision Tritium White Dot - Square Rear For Glock 20/41

The Night Fision Tritium White Dot Square Rear sight for Glock 20/41 is purpose-built for shooters who demand rapid target acquisition in low-light and no-light environments. Designed for large-frame Glock platforms, this rear sight represents the evolution of combat optics technology—moving beyond traditional steel sights to self-illuminating tritium technology that requires no batteries, no activation, and no external light source. Law enforcement, military, and civilian operators rely on tritium sights as a fundamental upgrade for duty weapons, hunting platforms, and defensive carry configurations where speed and certainty matter.

Night Fision's tritium white dot design uses radioactive hydrogen isotope (tritium) sealed within a glass vial to produce a continuous green glow that remains visible across the entire operational spectrum—from daylight to pitch darkness. The square rear configuration provides a wider sight picture than traditional round designs, enabling faster target transitions and improved precision during rapid-fire strings. The white dot center emphasizes the front sight post and naturally guides the shooter's eye to proper sight alignment, while the tritium glow serves as a backup acquisition tool when ambient light drops. This modular design installs directly onto Glock 20/41 dovetail mounts without gunsmithing, using standard tools and requiring no alterations to the firearm's frame or slide.

Operators fielding full-size Glock platforms—particularly the .45 ACP Glock 21 and 10mm Glock 20/41—benefit most from this rear sight configuration, as the larger sight plane reduces apparent recoil and improves follow-up shot accuracy during defensive drills. Military and law enforcement agencies have standardized tritium sights across their pistol arsenals for this exact reason: consistent performance regardless of lighting conditions and zero maintenance beyond standard weapon care. Installation is straightforward for users familiar with basic Glock maintenance; the sight simply drifts into the existing rear dovetail using a brass punch and hammer. This upgrade transforms factory Glock sight systems into professional-grade defensive optics comparable to issued military equipment, making it an essential investment for anyone serious about pistol reliability and speed under stress.