Holosun ARO-MRS-RD Microdot Red Dot Sight with 2MOA / 65 MOA Circle Dot Reticle, black, Picatinny
Holosun ARO-MRS-RD — Multi-Reticle 1x22 Red Dot for Rifles
Holosun ARO-MRS-RD is part of the new ARO (Advanced Rifle Optic) series unveiled around SHOT Show 2025, bringing a refined 22mm housing, lower 1/3 co-witness 1.63" mount, and Holosun’s MRS circle-dot reticle to rifle platforms. Official specs include IP67 sealing, Shake Awake, 50,000-hour battery life (CR2032), 12 brightness settings (10 DL, 2 NV), 0.5 MOA adjustments with ±50 MOA travel, and a compact 0.86" window for fast acquisition with unlimited eye relief. The ARO series was publicly introduced in early 2025, and the ARO-MRS-RD model belongs to this 2025 release wave.
What it does best in the field
- Fast, intuitive circle-dot aiming: the 65MOA ring drives rapid target acquisition at CQB distances, while the 2MOA dot supports precise holds at extended carbine ranges.
- Low-light operability: 12-step control with 2 NV-compatible levels integrates cleanly with NODs; multi-coated glass maintains contrast under mixed lighting.
- Hard-use reliability: IP67 ingress protection, 1,000g shock rating, and an anodized aluminum housing sustain recoil, weather, and duty carry demands.
- Always-ready runtime: Shake Awake plus a CR2032 platform delivers up to 50,000 hours, minimizing mid-season battery swaps.
- Mounting height for AR workflows: native 1.63" lower 1/3 mount aligns with common BUIS/magnifier stacks; compatibility with T2-style ecosystem is highlighted in series materials.
Practical use cases
- Hunters in dawn/dusk: quick circle reference to center on moving game in brush; downgrade to dot for tighter shots across clearings.
- Airsoft and training: rugged housing, sealed electronics, and long battery life for field weekends; fast re-index after transitions and barricades.
- Tactical sport/3-Gun carbine: rapid close targets with the ring, then torque down to the 2MOA dot through ports or weak-side positions.
- Patrol/defense carbines: parallax-free design, unlimited eye relief, NV-capable settings, and reliable activation from Shake Awake keep the optic mission-ready.
Why experienced users trust this model
- Proven Holosun feature set (MRS, Shake Awake, long life) in a newly optimized 22mm housing that pairs cleanly with magnifiers.
- Clear mechanical granularity: 0.5MOA clicks across ±50MOA for predictable zeroing, with durable, IP67-rated construction for adverse weather and transport.
- Purpose-built height and footprint synergy for AR-pattern rifles and accessory stacks, reducing setup friction and preserving cheek weld.
Installation, zeroing, maintenance
- Mounting: use the included 1.63" mount for lower 1/3 co-witness on ARs; torque to manufacturer values; verify rail alignment before final torque.
- Zeroing: start at 25m; adjust 0.5MOA/click; confirm ±50MOA travel allows centering on typical rails; re-confirm at 50–100m with the 2MOA dot.
- Maintenance: keep lenses debris-free with a microfiber cloth; check cap/side battery tray for seal integrity; replace CR2032 on schedule to avoid runtime surprises; validate zero after hard impacts or mount changes.
Technical specifications Holosun ARO-MRS-RD
Parameter | Value |
Reticle | 2MOA dot & 65MOA circle (MRS), red (650nm) |
Magnification | 1x |
Parallax | Parallax-free; unlimited eye relief |
Brightness | 12 settings (10 day, 2 NV) |
Battery | CR2032, up to 50,000h |
Housing/material | Aluminum, MAO finish |
Window size | 0.86" |
Objective/housing | 22mm housing (ARO series) |
Adjustments | 0.5MOA per click; ±50MOA W&E |
Mount height | 1.63" lower 1/3 co-witness (included) |
Dimensions (in) | 2.48×1.54×2.63 |
Weight | 3.38oz |
Waterproof | IP67 |

















