Rival Arms RA4A231G MOS Night Sights Glock 17/19 Green Tritium

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

These sights excel in tactical applications where lighting conditions change rapidly. Law enforcement officers benefit from the instant transition between daylight and low-light environments without adjusting technique. Competitive shooters appreciate the consistent sight picture across varying range lighting. The MOS height allows backup iron sight capability when mounted beneath red dot optics, providing redundancy for critical applications.

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

The RA4A231G represents a practical upgrade for Glock owners seeking reliable night sight capability without compromising daylight performance. Professional-grade tritium technology ensures consistent operation across temperature extremes and environmental conditions.