Trijicon SA37 Front & Rear Night Sights for S&W M&P Series (Green) – Tritium, No Batteries

Overview

Trijicon Bright & Tough SA37 night sights are a three-dot iron sight system designed to boost night-fire accuracy without batteries. In practical terms, they can improve sight picture in low light by up to five times compared with traditional iron sights, while preserving the fast, instinctive aiming feel shooters expect. This system is built to perform without external power, relying on proven Tritium illumination to keep aiming sharp as ambient light fades.

Rugged, real-world construction

The SA37 sights are housed in a durable metal body and cushioned within silicone rubber to endure heavy recoil and daily wear. A sapphire jewel caps each Tritium lamp to help evenly distribute light and guard against solvents and puncture. Lamps sit inside protective aluminum cylinders, further shielding them from harsh cleaning agents and rough handling. The green illumination in these sights is warranted for 12 years from the date of manufacture, offering long-term reliability.

Key features

• WHITE RINGS: daylight visibility enhanced by a white ring around each glow point
• Tritium-phosphor lamp provides continuous illumination in dark conditions
• Sapphire window distributes light evenly and protects the lamp from solvents and puncture
• Aluminum cylinders shield the lamps from heavy recoil and cleaning solvents
• Fits Smith & Wesson M&P, M&P M2.0, SD9 VE, and SD40 VE (excludes Shield and CORE models)

Real-world use and considerations

• Fast target acquisition as ambient light fades at dusk or dawn
• Reliable, battery-free illumination for range drills and low-light practice
• Durable design that stands up to heavy recoil and routine maintenance
• 12-year warranty on green lamps offers long-term peace of mind

While results can vary by shooter and firearm, the combination of bright Tritium illumination, daylight visibility, and rugged construction positions the SA37 as a compelling upgrade for those seeking quick sight alignment in challenging lighting conditions.