Meprolight Tru-Dot Tritium Green Front Sight for Ruger SP101 - Steel Blue

The Meprolight Tru-Dot Tritium Green Front Sight for Ruger SP101 is a self-illuminated night sight designed to keep your revolver effective when daylight fades. Tritium vials provide passive illumination without batteries—they glow 24/7, so your front sight is always visible during low-light encounters or night shooting. This green front sight replaces the factory front sight on your SP101, giving you day/night sighting capability in a single upgrade.

Built for practical use, Meprolight sights have earned trust with law enforcement and military users worldwide. The sight maintains visibility in strong daylight while delivering the glow you need in darkness, eliminating the gap between day and night shooting. The steel blue finish matches the tactical aesthetic of the SP101 and resists corrosion in the field.

If you carry your SP101 or shoot it in variable light, a tritium front sight removes the guesswork of sight alignment after sunset. Installation requires minor modifications to fit your revolver's dovetail, but the result is a sight picture you can trust whether you're at the range or responding to a threat in low light.

Key Features

• Self-illuminated tritium vial—no batteries or maintenance required
• Green tritium for fast target acquisition and eye comfort
• Visible in daylight and glows in darkness
• Designed as a direct replacement for Ruger SP101 front sight
• Steel blue finish for durability and appearance
• Combat-proven design trusted by professional users

Frequently Asked Questions

Will this front sight fit my Ruger SP101?

Yes, this sight is designed as a replacement front sight for the Ruger SP101. Installation requires minor modifications to mount properly in the factory dovetail.

How long does the tritium glow last?

Tritium is self-illuminating and requires no external power. The vial will glow throughout its lifespan—typically 10–12 years depending on use and storage conditions.

Can I use this sight in daylight?

Yes. The tritium vial is visible both day and night, providing a consistent aiming point under all lighting conditions.

What makes a tritium night sight better than standard sights?

Tritium sights glow passively in low light without requiring you to operate a flashlight or adjust to darkness. This keeps both hands on your revolver and speeds target acquisition when lighting is poor.