This red dot uses the Trijicon RMR footprint standard.
Key specifications
| Footprint |
Trijicon RMR |
| Reticle |
3 MOA dot & 32 MOA circle [red] |
| Window size (H x W) |
19.5 x 24.1 mm [0.77 x 0.95"] |
| Total dimensions (L x W x H) |
45.0 x 30.0 x 32.8 mm [1.77 x 1.18 x 1.29"] |
| Battery type |
CR1632 |
| Battery access |
Battery changes from the side without removing the optic. |
See Faster. Shoot Smarter.
Osight C puts clarity, speed, and confidence at the center of every shot. A bright, wide viewing window accelerates your sight picture so targets pop instantly. Swap reticles to match the moment - from tight precision to fast transitions - while a smart motion sensor keeps the optic ready when you are and saves power when you’re not. Battery changes are a breeze and won’t disturb your zero. And thanks to its industry-standard footprint, Osight C drops onto a huge range of pistols and long guns without drama.
Why shooters love it
| Faster target acquisition |
A larger sight window helps your eye find the dot immediately - speeding up first shots and follow-ups. |
| Uncompromising clarity |
Premium multi-coated glass delivers high light transmission and crisp edges, so the dot stays sharp in more lighting conditions. |
| Zero that stays zeroed |
Side-loading battery swaps keep the optic on the slide - no need to remove and re-zero. |
| Adapt to any scenario |
Choose a 3 MOA dot for precision, a 32 MOA circle for speed, or run both for the best of each. |
| Fits your setup |
Uses the most common pistol footprint and works with high/low Picatinny mounts for rifles and PCCs. |
| Always ready, longer lasting |
Motion-activated wake and auto-sleep preserve battery life without slowing you down. |
Key features
| Large field of view with multi-coated lens |
24.1 mm [0.95"] × 19.0 mm [0.75"] window with advanced anti-reflective coatings for maximum light transmission and clarity. |
| Side-loading battery |
Tool-free access to a CR1632 cell - no optic removal, no re-zero hassle. |
| Selectable reticles |
3 MOA dot + 32 MOA circle (dot-only, circle-only, or dot-and-circle). |
| Most common footprint |
407c/507c (RMR pattern) for broad pistol compatibility; Picatinny high/low mounts available for rifle applications. |
| Motion sensor function |
Wakes with slight movement; powers down after ~3 minutes of inactivity to conserve battery. |