Holosun’s latest release marks a thoughtful evolution in red dot optics with the introduction of the ARO series—Advanced Rifle Optics designed to elevate performance without compromising simplicity. Building on the trusted 403 and 503 platforms, the ARO lineup brings a refined 22mm housing, seamless magnifier integration, and a redesigned mount system that includes both lower 1/3 co-witness and low-profile options right out of the box. Available with a precise 2 MOA dot or Holosun’s versatile Multi-Reticle System (MRS), and soon offering red, green, and gold reticle choices, the ARO series is engineered to meet the demands of today’s shooters while setting the stage for what’s next.
Below are the product overview, tech and features from Holosun’s website and social media post.
Product Overview
ARO (Advanced Rifle Optic) is an advancement on our popular 20mm 403 and 503 series optics. ARO features an all-new 22mm housing design that mates perfectly with our magnifier series and an all-new 1.63” lower 1/3 co-witness pedestal mount. ARO is available as a 2MOA dot only or with our Multi-Reticle System (MRS) in Red, Green, or Gold.
Technology & Features
• Up to 50,000 Hour Battery Life
• Shake Awake™ Technology w/ Last Setting Recall
• Reticle Options: MRS or 2 MOA Dot
• Battery Type: CR2032
• Battery Tray: Side Load
• Brightness Settings: 10 Daylight & 2 Night Vision
Specifications
• Weight: 4.94oz
• Body Dimensions: 2.48 x 1.54 x 2.63″
• Window Size: 0.86″
• W&E Travel Range: ± 50
• Housing Material: Aluminum
• IP Rating: IP67
Included Mounts Cowitness:
• 1.63 in – Standard Mount
• 1.05 in – Low Mount
With the introduction of the ARO series Holosun continues to refine what a modern red dot optic should deliver—clarity, durability, and adaptability, all in a streamlined package. Between the smart design choices—like Shake Awake™ technology, side-loading battery trays, and multiple brightness settings—and the ability to choose from red, green, or gold reticles, this series feels purpose-built for real-world versatility. With MSRPs ranging from $188 to $232, depending on configuration, Holosun has managed to strike a strong balance between innovation and value.