XS Big Dot Tritium Front Sight for S&W J-Frame & Ruger SP101

The XS Sights Big Dot Tritium Front Sight is designed for Smith & Wesson J-Frame revolvers with a pinned front sight and Ruger SP101 revolvers with a fixed rear sight. It combines a highly visible green tritium dot with a white outline and a CNC-machined steel body for practical sight alignment across changing light conditions.

The Big Dot design measures 0.188 inches and is intended to fit common holsters. Installation requires drilling the retaining pin hole with a drill press, so proper installation equipment and methods are required.

Key Specifications

• The sight is compatible with Smith & Wesson J-Frame and Ruger SP101 revolvers.
• The front sight uses a green tritium dot with a white outline.
• The Big Dot measures 0.188 inches in outside diameter.
• The overall sight height is 0.205 inches.
• The body is made from CNC-machined steel.
• The front sight is designed for a pinned S&W J-Frame front sight.
• The sight is intended for use with a fixed rear sight on the Ruger SP101.
• Installation requires drilling the retaining pin hole using a drill press.
• The sight has a black body with a green and white-outline front dot.

With its large, easy-to-index dot and tritium illumination, this front sight offers a straightforward upgrade for compatible revolvers used in everyday carry and general range practice. Its compact profile, common-holster compatibility, and durable steel construction make it a practical choice for shooters seeking clear front-sight definition in varied lighting.