The OSight C red dot sight is an open multi-reticle optic with a red 3 MOA dot and 32 MOA circle on the industry-standard RMR footprint (brand part no. OSIGHTCRD). OSight gave it a large 0.95-inch by 0.75-inch window and a side-loading CR1632 battery, so the sight can stay on the slide when the battery needs changing. A motion sensor wakes it at the slightest movement and powers it down after three minutes of inactivity. It is a straightforward fit for a full-size or compact optic-ready pistol that needs a bright, easy-to-find aiming point.

Key Specifications

• The reticle combines a 3 MOA dot with a 32 MOA circle, a pairing that is quick to find at close range and fine enough for a smaller target.
• Reticle modes switch between dot and circle, dot only, or circle only, so one sight can be set up for speed or for precision.
• The reticle color is red, a bright, familiar aiming point for daytime shooting.
• The window measures 0.95 by 0.75 inches, a large opening that widens the field of view and helps with fast target acquisition.
• The lens is multi-coated with anti-reflective coatings, which maximizes light transmission and keeps the sight picture clear.
• Power comes from a CR1632 battery, a common coin cell that is easy to keep on hand.
• The battery loads from the side, so it can be replaced without removing the optic and without re-zeroing.
• Mounting uses the RMR footprint, which OSight also describes as the 407c/507c footprint, giving broad compatibility with milled slides and adapter plates.
• A motion sensor turns the sight on at the slightest movement and shuts it off after 3 minutes of inactivity to conserve the battery.
• Brightness is adjustable across 10 levels, so the reticle can be matched to bright daylight or dim conditions.

Frequently Asked Questions

Which pistol footprint does the OSight C use? It mounts on the Ruggedized Miniature Reflex (RMR) footprint, the same pattern OSight describes as the 407c/507c footprint, so it fits slides and adapter plates cut for that pattern.

Can I use only the dot or only the circle? Yes. The reticle switches between the 3 MOA dot with the 32 MOA circle, the dot alone, and the circle alone.

How is the battery replaced? The CR1632 battery loads from the side of the sight, so it can be swapped without taking the optic off the firearm and re-zeroing it.

Buy the OSight C Red Dot Sight, RMR Footprint, 3 MOA Dot and 32 MOA Circle

Choosing a pistol optic comes down to how quickly you can find the dot and how little maintenance it asks for. The OSight C answers both with a flexible multi-reticle and a battery you can change without disturbing your zero. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more red dot sights while you are here.