Olight Osight SE Enclosed Red Dot Sight (2 MOA Dot / 32 MOA Circle, RMSc Footprint)
The Olight Osight SE is a compact enclosed-emitter pistol optic built around a selectable multi-reticle system: 2 MOA dot, 32 MOA circle, or dot + circle. The sealed design, aspherical lens, and 10 brightness settings (8 daylight / 2 night vision) keep the sight fast to pick up while staying protected from debris and weather.
This model uses a side-load CR1620 battery so the optic can be serviced without pulling it off the slide, and it includes motion-sensing with memory function to retain your last-used settings.