Description
The Holosun ARO-CORE-RD-2 + HM3X Magnifier Combo is a compact 22 mm tube-style red dot for rifles, supplied with two mount heights. The Core version uses a MAO-finished aluminium body and runs on a side-loading CR2032. It is sold as a combo with the Holosun HM3X 3x flip-to-side QD magnifier. The reticle is 2 MOA red dot (650 nm). It suits rimfire and centrefire rifles, straight-pulls and shotguns where a light 1x sight with absolute or lower-third co-witness is wanted. Specifications below are from the manufacturer’s published data.
Key specifications
- Reticle: 2 MOA red dot (650 nm)
- Window: 22 mm objective (0.87 in)
- Housing: Aluminium, MAO finish
- Mounts included: 1.63 in lower-third co-witness and 1.05 in low Picatinny mounts
- Battery: CR2032, side tray
- Battery life: Up to 50,000 hours (setting 6)
- Solar failsafe: No
- Brightness settings: 10 daylight + 2 night vision
- Power features: Shake Awake
- Click value: 0.5 MOA
- Waterproof: IP67
- Shock rating: 1000 G
- Dimensions: 2.48 x 1.54 x 2.63 in
- Weight: 3.38 oz optic; 1.73 oz mount
- Magnification: 1x
- Warranty: Metal housing and optical system: lifetime of the product; LED illumination: 10 years from manufacture (registration required)
- Combo: Supplied with Holosun HM3X 3x flip-to-side QD magnifier (70 mm eye relief, 7° FOV, 9.8 oz)
- Type: Enclosed tube rifle sight
- In the box: optic, CR2032 battery, 1.63 in and 1.05 in mounts, lens cloth, multi-tool, wrench, manual and warranty card
Frequently asked questions
What reticle does the Holosun ARO-CORE-RD-2 + HM3X have?
2 MOA red dot (650 nm), per the holosun.com specification page.
Is the ARO Core waterproof?
Holosun rates it IP67.
Do I need a firearms licence to buy this optic?
No. Optics and mounts are not controlled items in Australia and ship Australia-wide from 3 Gun Tactical, Tingalpa QLD.
3 Gun Tactical, Tingalpa QLD — Licensed Firearms Dealer 50001578. Optics, mounts and accessories can be purchased without a firearms licence and are shipped Australia-wide. Source: Holosun.







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