Head to head

Holosun ARO-CORE-RD-2 vs Aimpoint Duty RDS 2 MOA

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

Both are 2 MOA, 1x, CR2032-powered red dots for a Picatinny rail, but Holosun prints 50,000 hours of battery life and Aimpoint prints 30,000 hours at daylight setting 6. The weights are not a clean pair: Holosun prints 3.38 oz for the optic body, while Aimpoint prints 110 g (3.9 oz) sight only and 140 g (4.9 oz) for the model with its 30 mm mount. Every figure is copied from each maker’s own page, checked November 5, 2026.

At a glance

Spec (maker label)	Holosun ARO-CORE-RD-2	Aimpoint Duty RDS 2 MOA, 30 mm mount (200758)
Reticle	2 MOA Dot (red)	Dot size 2 MOA (red)
Magnification	1x	1X (no magnification)
Window / aperture	Window Size 0.866 Diameter (no unit printed on the spec line; the page’s feature text says “22mm Optical Window”)	Clear aperture 18 mm
Size	Body Dimensions 2.48″ × 1.54″ × 2.63″ (axes not labeled)	Size L × W × H: 80 × 41 × 58 mm / 3.1 × 1.6 × 2.3 in
Weight	Body Weight 3.38 oz; Mount Weight 1.73 oz (listed separately)	Weight – optic only: 110 g (3.9 oz); Weight: 140 g / 4.9 oz (under this mount model’s general specifications)
Battery	CR2032 (side tray)	CR2032, 3V, Lithium
Battery life	50,000 Hours	30,000 h at daylight setting 6 (15,000 Lux, room temperature)
Brightness settings	10 Daylight & 2 Night Vision	6 daylight and 4 night-vision-compatible settings
Water	IP67	Submersible to 25 meters (80 feet)
Housing	Aluminum, MAO finish	Pressure-forged high strength aluminum
Mounting	Picatinny; ships with a 1.63″ lower 1/3 mount and a 1.05″ low mount (heights as printed)	Picatinny rail (MIL-STD 1913) with the Duty RDS one-piece torsion nut mount, 30 mm; height of optical axis 30 mm (1.2 in) measured from the top surface of the mounting platform
Source (checked Nov. 5, 2026)	holosun.com ARO-CORE-RD-2	aimpoint.com Duty RDS 2 MOA, 30 mm mount

Like for like: Holosun’s 3.38 oz is the body only and its mounts are weighed separately (1.73 oz for the mount weight it lists); we do not add them. Aimpoint prints both an optic-only weight (110 g / 3.9 oz) and a 140 g / 4.9 oz figure for this mount model, so the optic-only numbers (3.38 oz and 3.9 oz) are the closest pair on paper. Holosun’s “Window Size” and Aimpoint’s “Clear aperture” may not measure the same thing, and the two water ratings (an IP code and a stated submersion depth) are different kinds of statement, so we do not rank them. Aimpoint does not say whether its size figures include the mount. Battery life is stated at different settings, so we do not compare it beyond showing both. Holosun’s ARO-CORE line also has other reticle and color versions; this row is the 2 MOA red dot (ARO-CORE-RD-2).

Which to pick (on paper)

If you want the lower printed optic weight: Holosun lists 3.38 oz for the body; Aimpoint lists 3.9 oz (110 g) sight only. Mounts are counted differently, as noted above.
If you want the longer printed battery life: Holosun lists 50,000 hours; Aimpoint lists 30,000 h at daylight setting 6. The settings and test conditions differ, so treat the two as printed, not as a ranking.
If you want a stated submersion depth: Aimpoint prints 25 meters (80 feet); Holosun prints IP67 and no depth.
If you want the mounts in the box: Holosun lists two mounts (1.63″ and 1.05″) in the box; the Aimpoint model on this page comes with its 30 mm one-piece torsion nut mount.

We have not range-tested these; facts above are from the makers.

Not yet verified

Aimpoint’s sight-only and with-mount sizes are not separated on its page, and Holosun’s body dimension axes are not labeled.
Holosun’s window unit on the spec line (the feature text says 22mm).
Any drop, shock or temperature ratings, which we did not compare here.
Prices are not shown.

Frequently asked questions

How much does the Holosun ARO-CORE-RD-2 weigh?

Holosun lists a body weight of 3.38 oz and a separate mount weight of 1.73 oz. Aimpoint lists 110 g (3.9 oz) sight only for the Duty RDS and 140 g (4.9 oz) for the model with its 30 mm mount.

What battery life do they list?

Holosun lists 50,000 hours for the ARO-CORE-RD-2. Aimpoint lists 30,000 h at daylight setting 6 (15,000 Lux, room temperature) for the Duty RDS. Both use a CR2032.

What water ratings do they list?

Holosun lists IP67. Aimpoint lists submersible to 25 meters (80 feet).

Holosun ARO-CORE-RD-2 vs Aimpoint Duty RDS 2 MOA

At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

Keep exploring

At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

Keep exploring

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