Holosun ARO-CORE-RD-2 – 2 MOA Red Dot, 22 mm Window (ARO-CORE-RD-2)

The ARO-CORE-RD-2 is Holosun’s compact enclosed rifle optic built around a 2 MOA red dot and a 22 mm viewing window. Shake Awake turns it on when the rifle moves. A side-loading CR2032 is rated for 50,000 hours, and the box includes both a 1.63-inch lower 1/3 mount and a 1.05-inch low mount. Optic body weight is approximately 3.38 ounces. Holosun model ARO-CORE-RD-2, UPC 810047073598.

This listing is for the ARO-CORE-RD-2 with a 2 MOA red dot only.

2 MOA Red, 22 mm Window

Holosun puts a single 2 MOA red dot in a 22 mm objective — window diameter 0.866 inch. Magnification is 1x, parallax-free, unlimited eye relief, multi-coated glass. Light source is an LED at 650 nm. Brightness is manual: 10 daylight and 2 night-vision settings. Click value is 0.5 MOA, with ±50 MOA of windage and elevation travel.

Shake Awake and a Side-Loading Battery

Shake Awake powers the emitter when it sees motion and shuts it down when the optic sits still. Holosun also lists auto-off and memory for the last brightness setting. The CR2032 lives in a side tray, so you change the battery without pulling the optic off the rifle. Holosun rates runtime at 50,000 hours.

Housing and Mounts

Housing is aluminum with a MAO finish in black. Holosun rates it IP67 for water and dust and 1000G for vibration. The optic uses a T1 / T2 footprint; the two included mounts clamp to Picatinny. Lower 1/3 co-witness height is 1.63 inches; the low mount is 1.05 inches. Holosun lists mount weight at 1.73 ounces.

What’s in the Box

• ARO-CORE-RD-2 optic
• CR2032 battery
• 1.63" mount
• 1.05" mount
• Lens cloth
• Multi-tool
• Wrench
• Manual
• Warranty card

Holosun ARO-CORE-RD-2 Specifications

Frequently Asked Questions

What reticle is on this ARO?
A 2 MOA red dot. That is the reticle on ARO-CORE-RD-2.

Do I have to pull the optic to change the battery?
No. Holosun uses a side-loading CR2032 tray. Rated life is 50,000 hours.

What mounts come in the box?
Both a 1.63-inch lower 1/3 co-witness mount and a 1.05-inch low mount, plus the battery, lens cloth, multi-tool, wrench, manual, and warranty card.

Is it an enclosed optic?
Yes. Holosun lists the ARO-CORE-RD-2 as an enclosed rifle sight, IP67 water and dust rated.