The Meprolight Tru-Dot Green Tritium Night Sights transform the Ruger SP101 into a reliable low-light defensive platform. These self-illuminated sights provide instant target acquisition in complete darkness without batteries or external light sources. Professional-grade tritium technology delivers consistent visibility for over 12 years.
What Makes This Different
Unlike basic iron sights or battery-dependent optics, these tritium sights generate their own light through radioactive decay. The green tritium vials maintain brightness levels of 25 millicuries, providing clear sight picture in conditions where standard sights become invisible. Meprolight's sealed capsule design prevents tritium leakage while maintaining waterproof integrity to depths exceeding 200 feet.
Key Features
- Self-illuminated green tritium vials rated for 12+ years of continuous operation
- Precision-machined steel construction with corrosion-resistant black coating
- Dovetail mounting system designed specifically for Ruger SP101 frames
- Three-dot configuration with high-contrast white outline for daylight use
- Sealed tritium capsules meet military specifications for shock resistance
- Low-profile design prevents snagging during holster draw
- Installation requires gunsmith fitting for proper windage and elevation
Field performance remains consistent across temperature extremes from -40°F to 160°F. The tritium illumination requires no activation time, making these sights ideal for home defense scenarios where immediate target identification is critical. Law enforcement agencies worldwide rely on similar Meprolight systems for duty revolvers. The robust steel construction withstands repeated recoil from .357 Magnum loads without shifting zero.
Technical Specs
- Sight Type: Fixed front and rear tritium night sights
- Tritium Color: Green phosphor coating
- Mounting: Dovetail installation (gunsmith recommended)
- Compatibility: Ruger SP101 revolvers all barrel lengths
- Construction: Machined steel with matte black finish
- Tritium Rating: 25 millicuries initial brightness
- Operating Temperature: -40°F to 160°F
- Waterproof Rating: 200+ feet depth
- Manufacturer: Meprolight USA
- Country of Origin: Israel
These Tru-Dot sights eliminate the guesswork in low-light shooting situations where split-second decisions matter most. The proven tritium technology provides decades of reliable service without maintenance or battery replacement concerns.