The Olight Osight MOA dot and circle reflex sight pairs a 3 MOA dot with a 32 MOA circle in a rechargeable, open emitter package built on the most common footprint in the industry. That combination gives you a precision aiming point and a fast, eye catching ring in the same window, and you can run either one alone. Add a large multi coated lens and side loading battery access and you have a red dot that solves the two things shooters complain about most. It is a lot of sight for a compact optic.
Who the Olight Osight MOA Dot Sight Is For
Pistol shooters mounting an optic for the first time are the natural audience, because the 32 MOA circle dramatically shortens the learning curve. A large ring is far easier to find in the window during the draw than a bare dot, and it guides your eye to the dot rather than making you hunt for it.
Experienced red dot shooters get value from the other direction. Switch to dot only for precision work at distance, circle only for extremely fast close range shooting, or run both together as a default.
It also suits carbine and PCC builders who want a versatile, rechargeable sight with a wide field of view.
Key Features
Olight built the Olight Osight MOA dot and circle sight around a short list of very deliberate design decisions.
- 3 MOA dot plus 32 MOA circle with dot only, circle only, or combined reticle modes.
- Large 0.95 by 0.75 inch window for a generous sight picture and faster target acquisition.
- Advanced anti reflective multi coated lens that maximizes light transmission and clarity.
- Side loading CR1632 battery so you can change power without removing the optic or re-zeroing.
- Ruggedized Miniature Reflex footprint, the 407c and 507c standard, for wide mounting compatibility.
- Rechargeable design and Picatinny compatible mounting options.
Specifications and What the Numbers Mean
On the Olight Osight MOA dot sight, the dot measures 3 MOA and the surrounding circle measures 32 MOA. Window dimensions are 0.95 inches by 0.75 inches. Power comes from a CR1632 battery loaded from the side. Mounting follows the Ruggedized Miniature Reflex footprint and Picatinny compatible bases.
Side loading matters more than the spec sheet suggests. On sights with a bottom loading battery, changing a cell means unmounting the optic, and unmounting almost always means confirming zero again. Side access removes that whole problem from your maintenance routine.
The 407c and 507c footprint is the de facto industry standard, which means slides cut for it and the huge range of available adapter plates will accept this sight. That is a compatibility advantage that pays off years later when you change pistols.
Mounting, Zeroing, and Care
Mount it properly the first time. Degrease the screws and the mounting surface, apply a quality thread locker, and torque the screws evenly to the manufacturer’s specification. The overwhelming majority of red dot problems trace back to loose screws, not failed electronics.
Zero at a distance that reflects your use. Twenty five yards is the standard for a pistol, while carbine shooters often prefer fifty. Use the dot only mode for zeroing so you are working from the most precise reference the sight offers.
Keep the lens clean with a proper lens cloth and avoid wiping grit across the coatings. Open emitter sights should be checked for debris in the emitter well after dusty range days, since anything blocking it dims the reticle. Compare mounts, plates, and other sighting options in our optics category.
Battery discipline is easy with a side loading design. Swap the CR1632 on a calendar schedule rather than waiting for the reticle to dim, and keep a spare cell in your range bag. A red dot is only an advantage while it is powered, and a two dollar battery is cheap insurance for a sight you rely on.
Fast, flexible, bright, and easy to live with, this Olight reflex sight punches well above its size. The dot and circle combination is the reticle most shooters end up preferring. Ships direct to your door, no FFL required.
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