The American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness is an American Defense Mfg. quick-detach mount for Holosun AEMS optics, part number AD-AEMS-10-STD, at Absolute co-witness height. It clamps to a Picatinny rail with ADM's patented Auto Lock quick-detach lever, which self-adjusts to in-spec and out-of-spec Picatinny rails without tools and returns to zero when refitted.
How It Compares
Height is the whole decision with an AEMS mount, and this one is Absolute co-witness. The same mount is also stocked as AD-AEMS at lower 1/3 co-witness, AD-AEMS at 1.93 in, AD-AEMS at 2.33 in (night vision). If your optic uses a different footprint, the AD-RMR-LW mount is cut for the Trijicon RMR and SRO, the AD-MRO-LW mount for the Trijicon MRO and the AD-509T mount for the Holosun 509T. our guide to co-witness heights explains which height suits which rifle. Browse red dot mounts across every brand and optics and mounts for AR-15 and straight-pull rifles.
Ideal For
- Civilian Service Rifle and practical rifle stages shot at speed
- Straight-pull and practical shotgun where a fast, unmagnified sight picture wins
- Quick-detach removal for travel, cleaning and lockable transit
- Airsoft and training rifles that share a red dot with a live-fire host
Key Features
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Fits: Holosun AEMS optics
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Height: Absolute co-witness
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Mount: Picatinny, using ADM's patented Auto Lock quick-detach lever
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Return to zero: Auto Lock lever returns the optic to zero when refitted
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Material: 6061-T6, Type III hardcoat
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Origin: Made in USA
Technical Specifications
| Fits |
Holosun AEMS optics |
| Mount |
Picatinny (Auto Lock QD) |
| Height |
Absolute co-witness |
| Material |
6061-T6, Type III hardcoat |
| MPN / UPC |
AD-AEMS-10-STD / 810104930277 |
What's Included
- 1 × American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness (AD-AEMS-10-STD)
- Mounting hardware
Warranty
Covered by the American Defense Mfg. lifetime warranty against defects in materials and workmanship.
UK Delivery & Support
Every order is dispatched tracked from our UK warehouse, so there are no import duties or customs surprises, and you are backed by UK-based aftersales support from our team.
Frequently Asked Questions
Which optics fit the American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness?
Holosun AEMS optics. It is not cut for the Trijicon RMR, Trijicon MRO or Holosun 509T footprints.
What height does the American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness give?
This version is Absolute co-witness, which sits the dot in line with AR-height iron sights, so irons and dot align through the same window.
Does the American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness return to zero after removal?
Yes. It uses American Defense Mfg.'s patented Auto Lock quick-detach lever, which self-adjusts to the rail and returns the optic to zero when refitted, so it can be taken off for travel or cleaning and put straight back on.
What rail does the American Defense AD-AEMS Holosun AEMS QD Mount Absolute Co-Witness fit?
A MIL-STD-1913 Picatinny rail. The Auto Lock lever self-adjusts to in-spec and out-of-spec rails without tools.
Which AD-AEMS height should I choose?
Absolute co-witness aligns the dot with AR-height iron sights; lower 1/3 sits it above them; 1.93in raises the optical centreline to 1.93in / 49 mm for a heads-up posture; and 2.33in / 59 mm is the night vision height.
