REDWIN MANTIS 1×21 3 MOA RWD35 Closed Red Dot Sight – Compact Red Dot for Sporting Rifles

The REDWIN MANTIS 1×21 3 MOA RWD35 is a compact closed red dot sight designed for rifles equipped with a Weaver/Picatinny rail. Its closed design effectively protects the optical system from dirt and weather conditions, ensuring reliable performance during training, competitions, and recreational shooting.

Equipped with a 3 MOA dot, six brightness adjustment levels, and two mounts included, it allows for easy configuration to suit different platforms and shooter preferences.

Key Advantages of the REDWIN MANTIS RWD35

• Closed design protecting the optics
• 3 MOA aiming dot
• 1x magnification
• 21 mm objective lens diameter
• 6 brightness adjustment levels
• Unlimited Eye Relief
• Compatibility with Weaver and Picatinny rails
• Two mounts included – Low and Riser
• Shockproof and fogproof
• Recoil tested up to 800 g
• Compact design weighing 178 g

Closed Design for Increased Reliability

Unlike open red dot sights, the MANTIS 1×21 model features a completely closed optical system that effectively protects the lenses from:

• dust,
• mud,
• water,
• snowfall,
• accidental mechanical damage.

This solution makes the red dot sight perfectly suited for intensive use at the shooting range and in variable weather conditions.

3 MOA Dot – Fast and Intuitive Aiming

The red dot sight uses a 3 MOA red dot, which provides an excellent compromise between target acquisition speed and precision.

The user has 6 brightness levels available, allowing for adjustment of illumination intensity to current lighting conditions.

Unlimited eye relief allows for aiming with both eyes open, increasing situational awareness and reducing target acquisition time.

Simple Adjustment and Stable Zero Retention

The red dot sight offers:

• Vertical adjustment ±30 MOA
• Horizontal adjustment ±30 MOA
• Click value 1 MOA

Factory parallax setting at 50 yards and a very low parallax error value (<2 MOA) ensure consistent hits when used at typical rifle distances.

Resistance to Intensive Use

The RWD35 model was designed for use on platforms generating significant recoil.

Key design features:

• Recoil resistance up to 800 g
• Shock resistance
• Fog resistance
• Waterproof rating IPX4
• Operating temperature range from -40°C to +60°C

Thanks to this, the red dot sight will perform well in both sports training and daily use.

Two Mounts Included

The set includes two types of mounting:

• Picatinny Low – for low optic mounting,
• Picatinny Riser – providing a higher optical axis, suitable for AR-15 platforms, among others.

This allows for easy adjustment of the red dot sight's height to the weapon's configuration and the shooter's individual preferences.

Technical Specifications

Optical Parameters

• Magnification: 1x
• Objective lens diameter: 21 mm
• Aiming dot: 3 MOA
• Dot color: red
• Brightness: 6 levels
• Eye Relief: unlimited
• Parallax: <2 MOA
• Parallax setting: 50 yards

Adjustment

• Vertical adjustment: ±30 MOA
• Horizontal adjustment: ±30 MOA
• Click value: 1 MOA

Construction

• Type: closed red dot sight
• Mounting: Weaver / Picatinny
• Waterproof standard: IPX4
• Shockproof: yes
• Fogproof: yes
• Recoil tested: 800 g
• Operating temperature: -40°C to +60°C

Power Supply

• Battery: CR2032
• Voltage: 3 V
• Battery life: up to 700 hours (at brightness level 3)

Dimensions

• Length: 72 mm
• Width: 46 mm
• Weight: 178 g
• Axis height with Riser mount: 38.5 mm
• Axis height with Low mount: 22.3 mm

Set Contents

The set includes:

• REDWIN MANTIS 1×21 RWD35 red dot sight
• Flip-up objective lens cover
• Picatinny Riser mount
• Picatinny Low mount
• Adjustment wrench
• Optics cleaning cloth
• User manual

Who is the REDWIN MANTIS 1×21 for?

The RWD35 model will be a suitable choice for:

• AR-15 platform users
• IPSC Rifle shooters
• 2-Gun and 3-Gun competitors
• Those looking for a lightweight red dot sight for a sporting rifle
• Users who prefer a closed optic design
• Those who expect a simple, durable, and compact red dot

Why choose the REDWIN MANTIS 1×21?

The REDWIN MANTIS 1×21 3 MOA is a practical closed red dot sight for those seeking durable and functional optics for a rifle. The closed design protects the optical system from dirt, the 3 MOA dot allows for fast and precise aiming, and the two mounts included in the set allow for adjusting the optic's height to various platforms. Its compact size, recoil resistance, and solid construction make it a good choice for both training and competitions.