The American Defense Mfg. Holosun 509T QR Lower 1/3 Mount is a quick-release mount engineered specifically for the Holosun 509T enclosed reflex sight.
- Type: Quick-Release Optic Mount
- Compatible Optic: Holosun 509T
- Height: Lower 1/3 Co-Witness
- Material: 6061-T6 Aluminum, Hard Anodized
- Attachment: QR Auto-Lock Lever (Tool-Free)
- Rail Compatibility: Picatinny/MIL-STD-1913
- Use: AR-15, Modern Sporting Rifles, Tactical Carbines
