Holosun® ARO GR2 Green Dot Sight

The Holosun^® ARO GR2 Green Dot Sight combines precision, durability, and advanced features in a compact package. Compared to previous HS403/HS503 models, it introduces a larger 22 mm objective lens, a redesigned housing, and a crisp 2 MOA green dot for rapid target acquisition. A high mount is included, and with a T2 footprint it integrates seamlessly with most platforms.

Enhanced design and larger optics

The ARO GR2 builds on proven Holosun series with significant improvements. The new housing and mount design ensure a wider field of view and robust attachment. Its enlarged 22 mm lens improves aiming comfort and pairs perfectly with magnifier modules.

Clear image, no compromises

The 2 MOA green dot is sharp, bright, and easy to track. Aspherical glass eliminates distortion, while parallax-free design and unlimited eye relief allow for fast, precise, and comfortable aiming. Automatic brightness control, including night vision modes, adapts seamlessly to lighting conditions.

Extended runtime with smart features

Powered by a CR2032 battery, the sight delivers up to 50,000 hours of operation. ShakeAwake™ technology conserves energy while keeping the optic instantly ready—just move the weapon. The optic also stores your last settings for instant recall upon activation.

Seamless compatibility

The package includes a high mount with lower 1/3 co-witness (1.63″). The T2 footprint ensures compatibility with a wide range of aftermarket mounts. Integration into your setup is simple, with no need for modifications.

Key benefits:

• Redesigned housing and robust mount
• 22 mm objective lens, ideal for magnifiers
• 2 MOA green dot for fast target acquisition
• ShakeAwake™ motion-activated power saving
• Up to 50,000 hours of battery life on CR2032
• Aspherical glass for distortion-free clarity
• Automatic brightness adjustment with NV modes
• Memory of last brightness setting
• High (lower 1/3 co-witness) mount included
• Compatible with T2-footprint mounts