Olight Osight R Enclosed Red Dot Sight — Micro T1/T2, Multi-Reticle System

Olight Osight R — Enclosed Multi-Reticle Red Dot Sight

The Olight Osight R is a compact enclosed red dot sight built for carbines, rifles and other Picatinny-equipped platforms that require fast target acquisition, dependable protection and flexible reticle selection. Its Micro T1/T2 footprint, large 27.9 × 22.1 mm viewing window and selectable 2 MOA dot / 65 MOA circle make it a practical choice for dynamic shooting, training and low-light field use.

The Osight R uses a fully enclosed optical housing, which helps protect the LED emitter and internal optics from rain, dust, mud and debris. The housing is machined from 7075-T6 aluminium and carries an IPX8 water-resistance rating, making the sight suitable for demanding outdoor conditions and all-weather use.

The sight provides 1× magnification and a wide sight picture through its 27.9 × 22.1 mm multi-coated lens window. This generous window helps the shooter keep both eyes open, maintain situational awareness and transition between targets quickly.

Reticle and brightness control

Olight’s Multi-Reticle System offers three red reticle configurations: a precise 2 MOA dot, a large 65 MOA circle, and a combined 65 MOA circle with a 2 MOA centre dot. The dot supports deliberate shot placement, while the circle speeds up close-range target acquisition; the combined option is useful for rapid engagements at varied distances.

Brightness is adjusted through 12 levels: nine daylight settings and three night-vision-compatible settings. A dedicated NV button gives immediate access to the night-vision modes, and the sight remembers the last selected brightness level after being switched off.

Power and motion activation

The Osight R is powered by one CR2032 battery. Olight rates battery life at up to 83,000 hours when using the 2 MOA dot at brightness level 5; the circle-only and circle-dot modes have shorter runtimes.

Motion Activation Technology wakes the optic when movement is detected. After three minutes without movement, the sight enters standby mode, reducing unnecessary battery drain while keeping the optic ready for immediate use.

Mounting, adjustment and maintenance

The sight uses the widely supported Micro T1/T2 footprint and ships with a Lower 1/3 Co-Witness Picatinny mount providing an optical centre height of approximately 39 mm / 1.535 inches. This makes installation straightforward on most modern carbines and allows compatibility with a broad range of Micro T1/T2 mounting solutions.

Windage and elevation adjustments use 0.5 MOA per click, with a total adjustment range of ±50 MOA. For routine care, keep the lenses clean with a suitable optical cloth, check mounting screws periodically, replace the CR2032 battery when the low-battery warning appears, and store the sight with its protective covers installed. The included front cover can be replaced with the supplied ARD to reduce forward lens reflections.

Why choose the Osight R

The Osight R combines an enclosed-emitter design, a large viewing window, selectable reticles and a proven Micro T1/T2 mounting standard in one compact package. It is particularly well suited to AR-platform carbines, tactical training rifles and sporting firearms where fast handling, NV compatibility and resistance to weather are important.

Order the Olight Osight R from Professional Optics with delivery from Split, Croatia, across the European Union.

Technical specifications

Frequently Asked Qiestions

How long does the battery last in the Olight Osight R red dot sight?

The Olight Osight R is powered by one widely available CR2032 battery and delivers exceptionally long operating life for an enclosed reflex optic. Olight rates the maximum runtime at up to 83,000 hours when the 2 MOA dot is used at brightness level 5. Runtime is shorter when the 65 MOA circle or the combined circle-dot reticle is selected, because those configurations require more power. The sight also includes Motion Activation Technology: after three minutes without movement, it enters standby mode and wakes automatically when motion is detected. This helps preserve battery capacity during storage and periods of inactivity. A low-battery warning flashes the reticle when voltage drops below 2.2 V, giving the user clear notice to replace the CR2032 cell before an important outing.

What reticle options does the Olight Osight R Multi-Reticle System provide?

The Osight R uses Olight’s Multi-Reticle System, allowing the user to select one of three red reticle configurations. The first option is a fine 2 MOA dot, which is ideal for precise aiming and controlled shot placement. The second is a large 65 MOA circle, designed for very fast target acquisition at closer distances. The third combines the 65 MOA circle with a 2 MOA centre dot, providing both a large visual reference and an accurate aiming point. This flexibility makes the optic suitable for dynamic sport shooting, range training and hunting scenarios where target distance and available time can change quickly. The red reticle remains clearly visible against most natural backgrounds, and the user can adjust brightness across 12 levels to match daylight, dusk or night-vision conditions.

Is a red dot better than a green dot for hunting and sport shooting?

Neither red nor green is universally better; the best choice depends on lighting conditions, background colour and personal eye response. Red dots, such as the reticle in the Olight Osight R, are often perceived as natural and comfortable in varied daylight conditions. Green dots can appear brighter to some users in very bright environments, but they may also cause more noticeable bloom or starburst effects for people with certain astigmatism symptoms. The Osight R addresses changing light through nine daylight brightness levels and three night-vision-compatible settings. For hunting at dawn or dusk, and for sport shooting in mixed indoor and outdoor lighting, a red enclosed reflex optic with adjustable intensity provides a dependable and versatile solution without requiring a change of optic.

Is the Olight Osight R durable enough for outdoor use?

Yes. The Osight R is built around a CNC-machined 7075-T6 aluminium housing, a high-strength alloy chosen for its excellent strength-to-weight ratio. Its enclosed-emitter design protects the LED and internal optical path from rain, dust, mud and airborne debris, which is particularly useful during hunting trips, range sessions and outdoor competitions. The optic carries an IPX8 water-resistance rating and is specified for operating temperatures from −30 °C to +60 °C. It weighs approximately 190 g including the standard mount and battery, so it adds practical protection without excessive weight. Supplied front and rear lens covers help safeguard the multi-coated optics during transport, while the included ARD reduces forward-lens reflections in bright conditions.

Which platforms and mounts are compatible with the Olight Osight R?

The Olight Osight R uses the widely supported Micro T1/T2 footprint, one of the most common mounting standards for compact enclosed reflex optics. This makes it compatible with a broad selection of aftermarket mounts, risers and adapter plates designed for that footprint. The sight is supplied with a Picatinny Lower 1/3 Co-Witness mount that sets the optical centre at approximately 39 mm / 1.535 inches, a practical height for many modern sporting platforms. Installation requires only basic tools: secure the mount to a Picatinny rail, position the optic, tighten the mounting screws to the manufacturer’s recommended torque and verify alignment before use. Because the battery compartment is located on the side of the housing, the optic does not need to be removed from its mount for routine battery replacement.

Can the Olight Osight R be used with night-vision equipment?

Yes. The Osight R includes three dedicated night-vision brightness settings, accessed through a separate NV button for fast and intuitive operation. These lower-intensity settings help prevent the reticle from appearing excessively bright through compatible night-vision devices. The optic also remembers the last selected brightness level, so it returns to the user’s preferred setting after being switched back on. The enclosed housing is beneficial in low-light environments because it shields the emitter and lens assembly from dust and moisture. For users building a versatile optical setup for evening range work, low-light training or nighttime hunting applications, the combination of NV modes, Motion Activation Technology and a CR2032 power source makes the Osight R a practical enclosed reflex optic.

What warranty is provided for the Olight Osight R in the EU?

Warranty coverage for the Olight Osight R depends on the point of purchase and the applicable Olight warranty policy in the buyer’s EU country. Purchases made through an official Olight retailer are generally eligible for manufacturer warranty support covering defects in materials and workmanship under normal use. Olight’s European warranty programmes commonly provide five-year coverage for many products, while batteries and rechargeable cells may have shorter separate terms; buyers should confirm the exact warranty period and service process for their country before ordering. Keep the purchase invoice, as it is normally required for a warranty claim. Professional Optics, based in Split, Croatia, supplies the Osight R with delivery across Croatia and the European Union and can assist customers with product-related questions before and after purchase.

Is the Olight Osight R suitable for hunting and sport shooting?

The Osight R is well suited to both hunting and sport shooting applications that benefit from fast, both-eyes-open target acquisition. Hunters can use the 2 MOA dot for more deliberate aiming at longer distances, while the 65 MOA circle supports rapid target acquisition in dense terrain or moving situations. Sport shooters benefit from the large 27.9 × 22.1 mm viewing window, clear multi-coated optics and three selectable reticle configurations. The 0.5 MOA adjustment increments and ±50 MOA total adjustment range allow accurate zeroing, and the IPX8-rated enclosed housing provides confidence in rain, dust and changing temperatures. For users who want one compact reflex optic for varied outdoor disciplines, the Osight R offers a strong balance of speed, precision and field readiness.