American Defense Mfg. AD-509T Optic Mount – Lower 1/3 Height, Black Anodized Finish, Quick ReleaseAmerican Defense Mfg. AD-509T Optic Mount – Lower 1/3 Height, Anodized Black, Quick Release
The American Defense AD-509T is a premium lower 1/3 optic mount engineered for shooters who demand precision, durability, and fast target acquisition. Designed to match the Holosun 509T footprint, this mount delivers a seamless, rock‑solid connection while maintaining a low profile for optimal eye relief.
Key Features & Benefits
- Exact Holosun 509T Footprint: Engineered to the exact dimensions of the Holosun 509T, guaranteeing a perfect fit without the need for adapters.
- Lower 1/3 Height Design: Reduces optic height for faster sight picture acquisition and improved balance on tactical rifles.
- Quick‑Release Lever: Enables rapid removal and re‑installation of your optic without tools, perfect for mission‑critical situations.
- Durable Anodized Black Finish: Corrosion‑resistant, wear‑proof coating that stands up to harsh environments while maintaining a sleek, tactical appearance.
- Precision Machined Construction: CNC‑machined aluminum alloy ensures zero wobble and repeatable zero retention.
- Universal Compatibility: Fits any rifle platform that supports a lower 1/3 rail, including AR‑15, AR‑10, and many modern tactical builds.
- Lightweight Profile: At only 3.2 oz, the mount adds minimal weight, preserving the rifle’s handling characteristics.
Why Choose the AD-509T?
When speed and reliability matter, the AD-509T delivers. Its quick‑release mechanism saves precious seconds during transitions, while the lower 1/3 design keeps your eye on the target with reduced parallax error. The anodized finish not only looks professional but also protects against the elements, making this mount an ideal choice for both competition shooters and tactical operators.
Technical Specifications
| Specification | Details |
|---|
| Model | AD-509T-11-STD |
| Manufacturer | American Defense Manufacturing |
| UPC | 810008517642 |
| Mount Height | Lower 1/3 (approximately 1.25 inches above rail) |
| Finish | Black Anodized Aluminum |
| Quick‑Release Type | Lever‑actuated, tool‑free |
| Compatible Optic Footprint | Holosun 509T |
| Weight | 3.2 oz (90 g) |
| Material | 7075‑T6 Aluminum Alloy |
| Installation | Threaded 1/4‑20 screw, standard Picatinny rail interface |
| Warranty | Lifetime limited warranty against manufacturing defects |
Installation & Maintenance Tips
- Secure the mount to the lower 1/3 rail using the supplied 1/4‑20 screw; torque to 15‑20 in‑lb.
- Engage the quick‑release lever to lock the optic in place; verify that the lever clicks firmly.
- Periodically inspect the anodized coating for scratches; clean with a mild solvent and a soft cloth.
- Re‑zero your optic after any removal to ensure optimal accuracy.
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Upgrade your shooting platform today with the American Defense AD-509T optic mount – the perfect blend of speed, strength, and precision.
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