The Rival Arms RA4A231G In-Line MOS Night Sights deliver precision aiming capability in low-light conditions for Glock 17 and 19 pistols equipped with MOS (Modular Optic System) cuts. These tritium-powered sights maintain consistent visibility across all lighting conditions without requiring batteries or external light sources.
What Makes This Different
Unlike standard plastic sights that fade in darkness, the RA4A231G features self-illuminating green tritium inserts with a 12-year half-life for reliable performance. The front sight incorporates a bright orange outline for rapid target acquisition during daylight hours, while the rear sight uses a white outline for optimal contrast. This dual-color system creates faster sight alignment compared to single-color configurations.Key Features
- Green tritium gas tubes provide constant illumination for 12+ years
- Orange front sight outline enhances daylight visibility and target acquisition
- White rear sight outline creates optimal contrast for precise alignment
- MOS-specific height designed for co-witnessing with red dot optics
- Steel construction with corrosion-resistant finish withstands harsh conditions
- Drop-in installation compatible with factory Glock sight cuts
- Three-dot configuration follows traditional sight picture training
Technical Specs
- Compatibility: Glock 17, 19 with MOS cuts
- Tritium color: Green front and rear
- Outline colors: Orange front, white rear
- Material: Steel construction with protective coating
- Sight picture: Three-dot configuration
- Tritium half-life: 12 years minimum
- Installation: Drop-in replacement for factory sights
- Country of origin: United States

