Olight Osight C | Open Reflex Optic with Replaceable Side-Loading Battery

Olight Osight C | Open Reflex Optic with Replaceable Side-Loading Battery

The Olight Osight C is an open-emitter red dot optimized for full-size and compact handguns using the 407c/507c (RMR-style) footprint. Featuring a 3 MOA red dot, an optional 32 MOA circle, and a large viewing window, the Osight C supports fast target acquisition without sacrificing sight clarity or precision. Its simple layout and rugged build make it a practical red dot solution for everyday carry, range use, or defensive applications.

Reticle selection includes three modes: dot-only, circle-only, or circle-dot, allowing you to match the reticle to your shooting style and engagement distance. The optic is parallax-free and includes 10 brightness settings—8 for daylight and 2 for night vision compatibility. A motion-activated wake function ensures the optic powers on instantly with movement, and a 3-minute auto-off preserves battery life when idle.

The optic is built around a durable 7075-T6 aluminum housing with a fully multi-coated lens for enhanced light transmission and reduced glare. The window measures approximately 0.95 × 0.75 inches, offering a generous field of view in a compact footprint. Zeroing is user-adjustable in 1 MOA increments with durable, weather-sealed turrets that maintain point of aim under recoil.

Power comes from a CR1632 lithium battery housed in a side-loading tray, allowing for easy replacement without unmounting or re-zeroing the sight. Runtime exceeds 70,000 hours on the lowest brightness setting and up to 17+ days on maximum brightness, depending on usage and brightness mode. This setup ensures readiness for daily use without the inconvenience of frequent battery swaps.

In the box, you’ll receive the Osight C red dot optic, mounting screws, an adjustment tool, and user documentation. Whether you’re setting up a new build or upgrading an existing slide, the Olight Osight C delivers dependable red dot performance with flexible reticle options, rugged construction, and practical power management—all in a lightweight open reflex format.