Holosun Brown ARO Red 2MOA Dot Only Reticle 22mm Housing, Shake Awake, 1/3 Co-Witness - ARO-RD2-BRN
Verified Holosun Dealer
Holosun Brown ARO Red 2MOA Dot Only Reticle 22mm Housing, Shake Awake, 1/3 Co-Witness - ARO-RD2-BRN is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
🚚 FREE UPS SHIPPING FULLY INSURED
📦 Delivery Time: Calculating...
💲 Sales Tax Savings: See if you qualify.
Description
Description
The Holosun ARO-RD2 in Barrett Brown takes the performance of the ARO (Advanced Rifle Optic) and gives it a fresh, rugged new look. Finished in a premium Barrett Brown housing, this optic not only delivers cutting-edge function but also blends seamlessly with modern rifle builds and field gear. Built on the evolution of Holosun’s trusted 403 and 503 series, the ARO features an upgraded 22mm housing for enhanced durability and compatibility.
Designed to pair effortlessly with Holosun magnifiers, the ARO comes standard with a 1.63” lower 1/3 co-witness mount, making it mission-ready right out of the box.
Key Features
- Exclusive Finish: Durable Barrett Brown anodized aluminum housing for a distinct look and extra corrosion resistance.
- Reticle: Crisp 2 MOA red dot for fast, precise target acquisition.
- Battery Life & Technology: Up to 50,000 hours of runtime on a CR2032 with Shake Awake™ and Last Setting Recall.
- Brightness Control: 10 daylight levels and 2 night vision settings for all lighting conditions.
- Durability: Rugged aluminum build with IP67 waterproof rating—built for harsh environments.
- Compatibility: Standard T2 footprint for broad mounting options.
Specifications
- Manufacturer: Holosun
- Model/Series: ARO-RD2
- Finish: Barrett Brown
- Length: 2.48 in
- Width: 1.54 in
- Height: 2.63 in
- Weight: 3.38 oz
- Battery: CR2032
- Magnification: 1x
- Adjustment Click Value: 0.5 MOA
- Travel Range: ±50 MOA
- Window Size: 0.866 in
- Reticle Color: Red
- Housing Material: Aluminum
The ARO-RD2 Barrett Brown combines Holosun’s legendary reliability with a sleek, modern finish that stands out without compromising performance. Whether you’re outfitting a duty rifle or personal build, this optic delivers the precision, durability, and aesthetic to elevate your setup.

There is no sales tax, unless you live in GA/IL/IN/MI/NJ/NC/OH/PA/VA/MD/NV/AZ/KY/UT/FL/MN/TN/WA/AR/CO/CA/PR/WV/MO/TX
Free Shipping: All orders ship free via UPS Ground/USPS/FedEx which takes 1-5 business days. We also offer UPS 2nd Day air for $9.99.
Same Day Shipping:* UPS only accepts ground shipments on Weekdays. Therefore any UPS Ground order we receive will ship same day if ordered before 2PM EST on Weekdays only.
Hassle Free Returns: We have a 30 day return policy. If you want to return your item for whatever reason just contact us and we'll send you a pre-paid label just like Amazon.
We're available almost 24/7. Contact us via Chat, Text, Phone, Email, or on our contact us page
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.