Rival Arms RA4A231G In-Line MOS Night Sights for Glock 17/19 - Green Tritium Orange Front / White Rear

The Rival Arms RA4A231G In-Line MOS Night Sights are purpose-built tritium night sights engineered specifically for Glock 17 MOS and Glock 19 MOS pistols. The set uses an MOS Low profile, CNC-machined from steel with a snag-resistant U-notch rear designed to co-witness cleanly with a mounted red dot optic on a Glock MOS slide.

The front sight pairs a green tritium insert with a high-visibility orange outline for fast daylight acquisition, while the rear sight matches it with a green tritium vial framed by a white outline around a rounded U-notch. Together they deliver a consistent, glowing sight picture in low light and complete darkness, while the contrasting outlines promote quick, intuitive alignment in normal lighting conditions.

Finished in black and sized for duty-grade carry, the RA4A231G installs as a direct replacement on double-stack 9mm Glock MOS pistols including the G17 and G19. The low-profile housing and snag-free geometry keep the sights compatible with most standard holsters, making them a practical upgrade for any defensive or carry-grade Glock MOS platform.