OLIGHT Osight S Collimator — Black

The Osight S is a closed-emitter red dot produced by OLIGHT, designed for pistols with an RMSc optics-ready footprint. The reticle offers three selectable configurations — a 2 MOA dot, a 32 MOA circle, or a combination of both — allowing you to match the aiming solution to the situation without swapping optics: the small dot supports precision at distance, while the large circle speeds up target acquisition in close-range situations.

The parallax-free aspheric lens delivers a clean image with no edge distortion, while the ambient light sensor automatically adjusts dot brightness across 10 daytime levels and 2 night levels, removing the need for manual adjustment during use. The motion sensor activates the optic as soon as movement is detected, reducing power draw when the firearm is stationary without sacrificing response time on the draw. This power management approach is the trade-off that sets the Osight S apart from manually switched optics: you gain battery life, but you depend on sensor sensitivity — a factor worth considering in contexts where absolute repeatability of activation is critical.

The magnetic charging cover is the most distinctive element of the design: it integrates a real-time display showing the battery status of both the optic and the cover itself, and allows you to recharge the optic up to 3 times without removing it from the firearm. The cover recharges via USB-C. The housing is machined from OAL™ aluminium alloy with a hard-anodised finish, and OLIGHT states that the optic retains its point of impact after more than 100,000 rounds of recoil testing.

Key features

• Three reticle configurations (2 MOA dot, 32 MOA circle, combination) adaptable to different distances and situations without replacing the optic.
• The magnetic charging cover integrates a display to monitor both the optic battery and the cover battery, with up to 3 full recharges available in the field.
• The motion sensor automatically manages power-on and standby, reducing consumption during inactive periods without slowing draw response time.
• RMSc footprint compatible with MOS, OR variants and the main optics-ready pistols currently in production.
• OAL™ alloy with hard anodising: lightweight and recoil-resistant construction, verified over extended test cycles.

In the box

• OLIGHT Osight S collimator
• Magnetic charging cover with battery display