XS Sights Big Dot Tritium Front Sight — S&W J-Frame/Ruger SP101

The XS Sights Big Dot Tritium front sight fits Smith & Wesson J-Frame and Ruger SP101 revolvers with a fixed rear sight and provides a high-visibility aiming reference for close-range use. It uses a tritium-powered Glow Dot and a high-contrast outline to maintain visibility in low light and daylight conditions. The sight body is CNC-machined steel and is available in a green tritium dot with a white outline. Installation requires drilling a pin hole in the sight body for the retaining pin.

Key Specifications

• The sight uses a tritium-powered insert for low-light visibility.
• The Big Dot front measures 0.188″ in diameter.
• The overall sight height is 0.205″.
• The sight body is made from CNC machined steel.
• The front color is green with a white outline.
• Designed to fit Smith & Wesson J-Frame and Ruger SP101 revolvers with a fixed rear.
• Installation requires a drilled pin hole in the sight body.
• The product type is a tritium front sight.
• The frame color is black.
• The warranty term is 10 Year.

For shooters who prioritize fast, clear sight acquisition at short ranges, the XS Big Dot Tritium front sight delivers a clean, bright aiming reference in a compact package. Its CNC-machined steel construction and tritium visibility make it a practical upgrade for everyday carry and close-range defensive use where rapid target alignment and repeatable sight picture matter.