Umarex RDS 8 Red Dot Sight

• Manufacturer: Umarex
• Model: RDS 8
• Manufacturer item number: 2.1038
• Optic type: Open reflex red dot sight
• Magnification: 1×
• Reticle: Illuminated red dot
• Dot size: 8 MOA
• Brightness settings: 2
• Parallax adjusted to: 10 metres
• Mounting footprint: C-More compatible
• Included mounting base: Universal Picatinny
• Power source: 1 × CR1632 lithium battery
• Battery included: Yes
• Auxiliary rear sight: Integrated
• Windage adjustment: Yes
• Elevation adjustment: Yes
• Overall length: 48 mm
• Sight weight: 19 g
• Manufacturer-listed recoil resistance: Up to .22 LR

The 19 g figure refers to the sight itself. The complete installed weight will depend on the mounting base and hardware used.

The Umarex RDS 8 uses an 8 MOA illuminated red dot designed to provide a clearly visible aiming point for rapid target acquisition.

MOA stands for Minute of Angle and describes the angular size of the illuminated dot.

An 8 MOA dot covers approximately 8.4 inches at 100 yards, with proportionally smaller coverage at shorter distances.

The larger aiming dot makes the RDS 8 particularly suitable for close-range recreational shooting, where quickly locating the aiming point is often more important than having a very fine precision reticle.

For users who primarily shoot small targets at longer distances, a sight with a smaller MOA dot may provide a more precise aiming reference.

The RDS 8 features two red-dot brightness settings, allowing the illumination intensity to be adjusted according to the surrounding lighting conditions.

The lower setting can be useful when a less intense aiming point is preferred, while the brighter setting helps make the dot easier to identify against more demanding backgrounds.

The sight provides 1× magnification, meaning the target is viewed without optical enlargement.

This allows a natural sight picture and makes the optic suitable for both-eyes-open aiming.

Switch off the illumination after use to conserve battery power.

The Umarex RDS 8 features a C-More-compatible mounting footprint, allowing installation on suitable optics-ready platforms using the appropriate adapter plate.

A universal Picatinny mounting base is included, allowing the sight to be fitted to compatible Picatinny rails without requiring a separate base.

This provides flexibility for users who wish to install the sight on compatible airguns, airsoft equipment or other recreational shooting platforms.

Not all optics-ready systems use the same mounting footprint. A platform described as optics-ready or MOS may require a specific adapter plate before the RDS 8 can be installed.

Before purchasing or fitting the sight, check the mounting footprint, rail dimensions, fixing screws and available clearance.

An 11 mm dovetail rail is not the same as a Picatinny rail and may require a suitable conversion adapter.

The RDS 8 incorporates an auxiliary rear sight feature, providing an additional mechanical aiming reference when the illuminated red dot is switched off or unavailable.

This can be useful if the battery becomes depleted or the electronic illumination cannot be used.

The effectiveness of the auxiliary sight depends on the mounting arrangement and the position and height of the equipment's front sight.

It should not be assumed that the auxiliary sight will provide a usable conventional sight picture on every compatible platform.

The Umarex RDS 8 is powered by one CR1632 lithium coin-cell battery, which is included with the sight.

The battery operates the illuminated red dot and its two brightness settings.

The battery compartment is located underneath the optic, meaning that the sight may need to be removed from its mounting plate when replacing the battery.

After replacing the battery and reinstalling the sight, check that the mounting hardware is secure and confirm the zero before use.

Battery life depends on brightness setting, temperature, battery quality and frequency of use. A fixed operating runtime is not specified here.

Switch off the illumination when the sight is not in use.

Keep coin-cell batteries away from children and dispose of used batteries responsibly.

The RDS 8 provides windage and elevation adjustment to align the illuminated red dot with the equipment's point of impact.

After securely installing the sight, begin zeroing at an appropriate distance in a safe, authorised shooting environment.

Make small adjustments and confirm the point of impact before making further corrections.

The optic is parallax-adjusted to 10 metres, although some parallax error may remain when aiming at other distances.

Once zeroed, check that the mounting hardware remains secure and that the aiming point is consistent.

Follow the manufacturer's operating instructions and avoid overtightening adjustment screws.

The manufacturer lists the RDS 8 with recoil resistance up to .22 LR.

This makes it suitable for compatible low-recoil shooting platforms within the manufacturer's stated limits.

Compatibility should always be checked against the specific equipment on which the sight will be installed.

Spring-piston air rifles can produce unusual forward and rearward recoil forces, so a general calibre rating should not be treated as confirmation of compatibility with every spring-powered air rifle.

For equipment with significant recoil or unusual operating characteristics, check suitability before installation.

• Remove loose dust using a suitable optics blower or soft brush.
• Clean the viewing lens using an appropriate microfibre optics cloth.
• Avoid abrasive materials and harsh cleaning chemicals.
• Inspect mounting screws and adapter plates periodically.
• Keep the battery compartment clean and dry.
• Switch off illumination after use.
• Remove the battery before extended storage.
• Check the sight's zero after removing and reinstalling it.
• Avoid unnecessary impacts and unauthorised dismantling.

Store the sight in a clean, dry environment when not in use.

• 1 × Umarex RDS 8 Red Dot Sight
• Universal Picatinny mounting base
• 1 × CR1632 lithium battery
• Manufacturer-supplied mounting hardware
• Manufacturer's operating instructions

Platform-specific optics-ready adapter plates, additional rail conversion adapters and the equipment on which the sight is mounted are not included unless separately specified.

The Umarex RDS 8 Red Dot Sight is advertised by a UK retailer with a 1-year (12-month) manufacturer warranty, subject to the applicable warranty terms and conditions.

Commercial warranty cover generally applies to eligible manufacturing defects arising during normal use.

Accidental damage, misuse, unauthorised modifications, incorrect installation and normal wear and tear may be excluded under the applicable warranty terms.

If you experience a problem with your sight, please contact Bamfords Online with your order details. We will be happy to assist with your warranty enquiry and the appropriate next steps.

Your statutory consumer rights remain unaffected.

What size is the RDS 8 red dot?

The RDS 8 has an 8 MOA illuminated red dot, as specified in the Umarex operating manual.

Does the RDS 8 have a red or green dot?

Red only.

How many brightness settings does it have?

Two brightness settings.

Does the sight magnify the target?

No. The RDS 8 has 1× magnification.

What does 8 MOA mean?

It describes the angular size of the illuminated dot. An 8 MOA dot covers approximately 8.4 inches at 100 yards, with proportionally smaller coverage at shorter distances.

How much does the Umarex RDS 8 weigh?

The sight itself weighs 19 g. The installed weight will depend on the mounting base and hardware.

How long is the sight?

48 mm.

What mounting footprint does the RDS 8 use?

A C-More-compatible footprint.

Does it include a Picatinny mount?

Yes. A universal Picatinny mounting base is included.

Will it fit every optics-ready air pistol or airsoft pistol?

No. Compatibility depends on the mounting footprint and the availability of a suitable adapter plate.

Does it fit an 11 mm dovetail rail?

Not directly with the supplied Picatinny base. A suitable conversion adapter may be required.

What battery does the RDS 8 use?

One CR1632 lithium battery.

Is the battery included?

Yes. A CR1632 battery is supplied.

Can the battery be replaced without removing the sight?

The battery compartment is underneath the optic, so removal from the mounting plate may be necessary.

Does the RDS 8 have a backup sight?

Yes. It incorporates an auxiliary rear sight, although its usefulness depends on the equipment's front sight arrangement.

Can windage and elevation be adjusted?

Yes. Both adjustments are provided for zeroing.

Is the RDS 8 suitable for an air rifle?

It can be used on compatible air rifles within the manufacturer's recoil limits. Always confirm suitability for your particular model.

What warranty does the RDS 8 have?

A UK retailer advertises a 12-month manufacturer warranty, subject to the applicable terms. Your statutory consumer rights remain unaffected.

What is the difference between the RDS 8 and RDS 6?

The RDS 8 is a compact open reflex sight with an 8 MOA red dot, two brightness settings and a C-More-compatible footprint. The RDS 6 has an enclosed tubular design, a 6 MOA red/green dot and five brightness settings for each colour.

What is the difference between the RDS 8 and Nano Point 3?

The RDS 8 features an 8 MOA red dot, two brightness settings and a C-More-compatible mounting footprint. The Nano Point 3 features a 6 MOA red/green dot and a supplied Picatinny mounting base.