Standard Dot Night Sights are defensive tritium sights designed to enhance your Ruger revolver. The sights use a proprietary photoluminescent Glow Dot that absorbs ambient light and glows in low light. The convex dot's additional surface area increases light absorption, intensifying the charge of the Glow Dot. Designed to be large and highly visible, these sights help solve many issues, from aging eyes to deteriorating vision. We've found that green is an excellent option for low light and has a very bright glow intensity, and the white front is reflective and offers an easy-to-see sight in bright or low light. XS Tritium Night sights are big, bright, and easy to see day or night, upgrade your Ruger SP101 sights with the fastest sight in any light.

Product Features:

• Tritium-powered front sight 
• Standard Dot front measures 0.140"
• High-contrast colored front sight 
• Green Glow dot absorbs ambient light and glows in low light
• White: Reflective front sight that is easy to see in bright or low light
• Pre-drilled for easy DIY installation
• Durable CNC-machined steel 
• 12-year warranty on Tritium
• Kit Includes: front sight, roll pin, red threadlocker (SP101), insert with instructions