American Defense Holosun AEMS QR Lower 1/3 Co-Witness Mount
American Defense Mfg.
$122.69
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American Defense Mfg.
American Defense Holosun AEMS QR Lower 1/3 Co-Witness Mount
The American Defense Mfg. AD-AEMS QR Lower 1/3 Mount is a precision-engineered quick-detach replacement mount purpose-built for the Holosun AEMS Red Dot, delivering rock-solid co-witness alignment and repeatable zero retention on any Picatinny rail platform.
- Patented QD Auto Lock Lever system ensures fast, tool-free attachment and removal
- Lower 1/3 co-witness height for seamless use with standard AR-15 iron sights
- Precision machined from aircraft-grade 6061-T6 aluminum for maximum strength-to-weight ratio
- Hard coat T3 Mil-Spec Type III anodize finish resists corrosion, wear, and harsh environments
- Lever configures to lock front or rear to suit your handling preference
- Compatible with both in-spec and out-of-spec Picatinny rail systems for broad versatility
Who This Is For
This mount is ideal for AR-15 and MSR owners running the Holosun AEMS optic who demand a reliable quick-detach solution without sacrificing zero. Whether you're a competitive shooter swapping optics between stages, a duty-use professional who needs confidence in every deployment, or a serious enthusiast who refuses to compromise on mount quality, the AD-AEMS QR Lower 1/3 delivers the repeatability and durability your setup requires.
Specifications
| Brand | American Defense Mfg. |
|---|---|
| Model | AD-AEMS QR Lower 1/3 |
| Compatible Optic | Holosun AEMS Red Dot |
| Mount Height | Lower 1/3 Co-Witness |
| Material | 6061-T6 Aluminum |
| Finish | Hard Coat T3 Mil-Spec Type III Anodize |
| Attachment System | Patented QD Auto Lock Lever |
| Rail Compatibility | MIL-STD-1913 Picatinny (in- and out-of-spec) |
| Tool Requirement | None (finger or flat-blade screwdriver) |
| Lever Orientation | Front or Rear Configurable |
| Country of Origin | USA |
Frequently Asked Questions
Will this mount return to zero after removal and reattachment?
Yes. The American Defense Mfg. Patented QD Auto Lock Lever system is engineered for repeatable zero retention, meaning you can remove and reattach the mount — and the optic mounted to it — without needing to re-zero your Holosun AEMS. This makes it an excellent choice for shooters who rotate optics between multiple rifles or need to remove the optic for transport and storage.
Does this mount work with rifles that have non-standard Picatinny rails?
Absolutely. One of the key advantages of the AD-AEMS QR mount is its ability to accommodate both in-spec and out-of-spec Picatinny rail systems. The Auto Lock Lever self-adjusts to compensate for rail variations, providing superior clamping engagement across a wide range of platforms — from mil-surplus rifles to modern sporting rifles with aftermarket handguards.
Is this mount compatible with any red dot other than the Holosun AEMS?
No — the AD-AEMS mount is specifically designed to interface with the Holosun AEMS footprint and form factor. It is not a universal optics mount. If you are running a different red dot or holographic sight, American Defense Mfg. offers a broad lineup of mounts tailored to other optic models. Be sure to verify optic compatibility before purchasing.
