Holosun AEMS Micro Red MRS: enclosed micro optic with a square window
Enclosed emitter. Square 0.71″ window. Multi-Reticle System. RMSc plate included.
Holosun’s new 2026 enclosed micro optic: a fully sealed emitter in a true micro footprint, with a square 0.71 × 0.71 inch window and the red Multi-Reticle System (650 nm): a 2 MOA dot, 32 MOA circle or both. Automatic brightness, Solar Failsafe, Shake Awake, Lockout Mode and a side-loading CR1620 rated up to 100,000 hours, in a 7075-T6 housing rated IPX8. Comes with an RMSc adapter plate. Also searched as the Holosun AEMS-MICRO, AEMS Micro Red, Holosun AEMS Micro MRS or AEMS MICRO RD.
- EnclosedSealed emitter
- 0.71″ sq.Window
- 100,000 hBattery life
- 2.1 ozWeight
- Authorized dealerMPN AEMS-MICRO-RD · New for 2026
- Free shippingCode SWATOPTICS
- WarrantyHolosun limited lifetime warranty
- ReturnsFinal sale · Refund Policy
Multi-Reticle System
- 2 MOA dotPrecision
- 32 MOA circleSpeed
- Circle + dotBoth
Three reticle options from one emitter. As a rule of thumb, 1 MOA is about 1 inch at 100 yards, so the 32 MOA circle spans roughly 32 inches there.
Six things the AEMS Micro Red MRS does
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Enclosed micro design
The emitter sits inside a fully enclosed housing, so dust, lint, rain and debris cannot block the reticle the way they can on an open-emitter optic.
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Square 0.71″ window
A 0.71 × 0.71 inch window, as tall as it is wide, that Holosun designed to maximize usable glass within a compact micro footprint.
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Multi-Reticle System
Choose a 2 MOA dot for precision, a 32 MOA circle for speed, or both together, from one emitter and one zero.
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Auto brightness + Solar Failsafe
A forward-facing light sensor sets brightness automatically, and an integrated solar panel supplements the battery.
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Shake Awake + Lockout
Motion powers the optic on instantly and saves the battery when idle; Memory keeps your setting and Lockout Mode prevents accidental changes.
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Side-loading CR1620
The battery tray slides out of the side, so the optic stays on the slide. Holosun rates it up to 100,000 hours at setting 6.
Dimensions and footprint
- 1.50″Length
- 1.00″Width
- 1.20″Height
AEMS Micro footprint + RMSc plate
The AEMS Micro uses its own micro footprint, and Holosun includes an RMSc to AEMS Micro adapter plate so it also fits RMSc-cut slides. Center mount height is 0.63″. Slide cuts and screw requirements vary, so confirm your pistol’s cut first.
AEMS Micro vs EPS Core MRS
Holosun’s two 2026 enclosed carry optics share the same reticle system; they differ in window shape, footprint, housing and battery rating.
| Spec | AEMS Micro | EPS Core MRS |
|---|---|---|
| Window | 0.71″ × 0.71″ | 0.90″ × 0.63″ |
| Body | 1.50 × 1.00 × 1.20″ | 1.61 × 1.18 × 0.97″ |
| Weight | 2.1 oz | 1.4 oz |
| Housing | 7075-T6 aluminum | 6061-T6 aluminum |
| Footprint | AEMS Micro + RMSc plate | RMSc direct |
| Battery life | 100,000 h | 50,000 h |
| Click value | 1 MOA | 1.5 MOA |
| Reticle | 2 MOA dot / 32 MOA circle | 2 MOA dot / 32 MOA circle |
Every angle of the AEMS-MICRO-RD
Holosun AEMS-MICRO-RD spec sheet
Optical
- Reticle
- 2 MOA dot & 32 MOA circle (MRS)
- Reticle color
- Red
- Wavelength
- 650 nm
- Emitter
- Enclosed
- Magnification
- 1×
- Eye relief
- Unlimited
- Window
- 0.71″ × 0.71″
- Coatings
- Multi-coated
Electronic
- Power source
- Solar cell & CR1620
- Battery location
- Side tray
- Battery life (setting 6)
- 100,000 h
- Brightness
- 8 daylight & 4 NV · 12 total
- Automatic brightness
- Yes, forward-facing sensor
- Memory
- Yes
- Lockout Mode
- Yes
- Shake Awake
- Yes
Physical & mechanical
- Body dimensions
- 1.50″ × 1.00″ × 1.20″
- Body weight
- 2.1 oz
- Center mount height
- 0.63″
- Housing
- 7075-T6 aluminum, hard anodized, black
- Footprint
- AEMS Micro; RMSc plate included
- Click value
- 1 MOA
- W&E travel
- ±30 MOA
Environmental
- Submersion
- IPX8
- Vibration
- 5,000 G
- Working temp
- −30 to 60 °C
- Storage temp
- −40 to 70 °C
What’s in the box
- AEMS-MICRO-RD optic
- RMSc to AEMS Micro adapter plate
- Multi-tool
- Lens cloth
- Manual & warranty card
Specifications from Holosun Technologies’ AEMS-MICRO-RD product page; EPS Core MRS figures from Holosun’s EPS-CORE MRS pages. Holosun may update specifications without notice.
Holosun AEMS Micro Red MRS questions, answered
What is the Holosun AEMS Micro Red MRS (AEMS-MICRO-RD)?
The AEMS-MICRO-RD is the red version of Holosun’s AEMS Micro, a 2026 enclosed-emitter pistol sight in a true micro footprint. It has a square 0.71 × 0.71 inch window, the Multi-Reticle System (2 MOA dot, 32 MOA circle or both), automatic brightness, Solar Failsafe, Shake Awake and a side-loading CR1620 rated up to 100,000 hours. An RMSc adapter plate is included.
What footprint does the AEMS Micro use?
It has its own AEMS Micro footprint, and Holosun includes an RMSc to AEMS Micro adapter plate so it also fits slides cut for the RMSc pattern. Slide cuts and screw requirements vary, so confirm your pistol’s cut before ordering.
AEMS Micro or EPS Core?
Both are Holosun enclosed pistol sights with the same 2 MOA dot / 32 MOA circle reticle system. The AEMS Micro has a square 0.71 × 0.71 inch window, a 7075-T6 housing, 1 MOA clicks and a 100,000-hour rating, and mounts with an included RMSc plate. The EPS Core MRS has a wider 0.90 × 0.63 inch window, mounts directly on RMSc, and is lighter at 1.4 oz versus 2.1 oz.
Is the AEMS Micro the same as the AEMS rifle optic?
No. The original Holosun AEMS is a larger enclosed sight for rifles. The AEMS Micro is a new 2026 pistol optic that shares the name and the enclosed design but has its own compact housing and footprint.
Why choose an enclosed-emitter optic?
On an open-emitter sight, dust, lint, rain or mud can land on the emitter and block the reticle. An enclosed sight seals the emitter inside the housing, which is why enclosed optics are popular for carry and duty use.
What reticles does the AEMS Micro have?
Holosun’s Multi-Reticle System gives three options: a 2 MOA dot for precise shots, a 32 MOA circle for fast pickup, or the circle and dot together. As a rule of thumb, the 32 MOA circle spans about 32 inches at 100 yards.
How long does the battery last?
Holosun rates the AEMS-MICRO-RD at up to 100,000 hours on one CR1620. Shake Awake powers the optic down when idle, and Solar Failsafe supplements the battery in light.
Red, green or gold — which AEMS Micro should I get?
Red (AEMS-MICRO-RD) is the traditional color. Green (AEMS-MICRO-GR) is Holosun’s high-visibility choice for faster pickup in bright conditions and against natural backgrounds. Gold (AEMS-MICRO-GD) is the high-contrast option against bright targets and complex backgrounds. All three share the same enclosed housing, window, footprint and Multi-Reticle System.
Do I have to remove the optic to change the battery?
No. The CR1620 loads from a side tray, so the optic stays on the slide during a battery change.
Is the AEMS Micro waterproof?
Yes. Holosun rates it IPX8 for submersion and tests it to 5,000 G of vibration, with a working range of −30 °C to 60 °C.
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