Overview

The ARO-CORE-RD2 + HM3X Combo pairs a compact 2 MOA red dot with a 3X flip-to-side magnifier for a fast, flexible setup that covers close-range speed and mid-range clarity.

With a refined 22mm window, Shake Awake, and included mounting options, it’s built to perform across rifles and PCC platforms without adding unnecessary complexity.

2 MOA Red Dot with 3X Magnification
Combines the ARO-CORE-RD2 red dot with the HM3X magnifier for fast close-range shooting and improved precision at distance.
Refined 22mm Optical Window
Compact window provides a clear, efficient sight picture for rapid target acquisition.
Shake Awake Technology
Motion activation powers the optic on instantly while conserving battery life when idle.
Side-Loading CR2032 Battery
Quick battery replacement without removing the optic from the mount.
Flip-to-Side QD Magnifier Mount
HM3X magnifier features a quick-release flip-to-side mount for rapid transition between 1X and 3X.
Rugged Aluminum Construction & Flexible Mounting
Durable housings built for hard use with IP-rated weather resistance and 1.63 inch lower 1/3 and 1.05 inch low mount options.

Features

Red 2 MOA Dot Reticle
Bright red 2 MOA dot delivers a clean aiming point for fast target acquisition and precise shot placement.
3X Magnification Capability
Includes the HM3X magnifier for instant transition between close range speed and extended distance precision.
Flip-to-Side Magnifier Mount
Quick-release flip mount allows rapid switching between unmagnified and magnified shooting without removing equipment.
22mm Optical Window
Refined 22mm objective provides a clear sight picture and improved situational awareness in a compact optic body.
Shake Awake Technology
Motion activated illumination powers the optic instantly while automatically shutting off during inactivity to preserve battery life.
Side Loading Battery Tray
CR2032 side tray allows quick battery replacement without removing the optic from the rifle.
Manual Brightness Control
Ten daylight and two night vision compatible brightness settings allow precise reticle intensity adjustment for any lighting condition.
Dual Mounting Options
Includes both a 1.63 inch lower 1/3 co-witness mount and a 1.05 inch low mount for flexible rifle setup compatibility.
Durable Aluminum Construction
Both the optic and magnifier feature rugged aluminum housings built for long term durability and field reliability.
All Weather Performance
IP67 rated optic and sealed magnifier construction provide dependable performance in harsh weather and demanding environments.

Specifications

Functions
- Selectable Reticle: No
- Solar Power: No
- Shake Awake Technology: Yes
- Auto Off: Yes
- Memory: Yes
- Manual Brightness: Yes
- Automatic Brightness: No
- Lockout Mode: No
Optical Data
- ARO-RD2:
  - Light Source: LED
  - Wavelength: 650 nm
  - Reticle: 2 MOA Dot
  - Magnification: 1x
  - Parallax: No
  - Unlimited Eye Relief: Yes
  - Multi-Coatings: Yes
- HM3X:
  - Magnification: 3x
  - Exit Pupil: 7.6 mm
  - Eye Relief: 70 mm
  - Field of View: 7°
  - Diopter: ±3D
  - Transmittance: .75
  - Lens Material: Optical Glass
Electronic Data
- Battery: CR2032
- Battery Life (Setting 6): 50,000 Hours
- Brightness Setting: 10 Daylight & 2 Night Vision
- Removable Battery: Yes
- Battery Location: Side Tray
Mechanical Data
- ARO-RD2:
  - Housing Material: Aluminum
  - Surface Finish: MAO
  - Housing Color: Black
  - Adjustment Per Click: 0.5 MOA
  - W&E Travel Range: ±50 MOA
  - Storage Temperature: -40°C ~ 70°C
  - Working Temperature: -30°C ~ 60°C
  - Submersion: IP67
  - Vibration: 1000G
- HM3X:
  - Housing Material: Durable aluminum
  - Surface Finish: MAO
  - Housing Color: Black
  - Storage Temperature: -40°C ~ 70°C
  - Working Temperature: -30°C ~ 60°C
  - Humidity (%): 0.95
  - Submersion: IPX7
  - Nitrogen (Concentration): 99%
  - Vibration: <2MOA
Physical Data
- ARO-RD2:
  - Window Size: 0.866" Diameter
  - Body Dimensions: 2.48" × 1.54" × 2.63"
  - Body Weight: 3.38 oz
  - Central Mount Height: 1.63"
  - Low Mount Height: 1.05"
  - Mount Weight: 1.73 oz
- HM3X:
  - Body Dimensions: 4" × 1.7" × 2.5"
  - Body Weight: 10.9 oz

Important information

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

You must be 18 or older to shop or purchase on our website, and 21 or older to purchase ammunition or firearms. Check local laws before ordering. By ordering, you certify that you meet all federal, state, and local legal requirements.

There are no returns or exchanges on armor, firearms, ammunition, or PPE.

Ammunition ships UPS Ground to the lower 48 states.

We reserve the right to correct critical errors.