American Defense Holosun 509T Low QD Optic Mount

The American Defense AD-509T Low is the low-profile quick-detach mount for the Holosun 509T footprint. It keeps the optic closer to the mounting surface than the co-witness and lower-one-third versions in the same family. The black anodized body gives the mount a simple, neutral finish.

Low mounting height is the defining feature here, so this model is intended for setups where a raised centerline is not wanted. The 509T-specific interface keeps the fit dedicated to that optic footprint. A quick-release base allows the mounted sight to come off the rail without separating it from the mount first.

This version is the natural comparison point for buyers who want the shortest AD-509T configuration. If a taller sight position is preferred, the co-witness and lower-one-third models provide other options while staying within the same optic family. Additional low-profile red-dot mounting options are listed in optics and rangefinders.

• Low-profile Holosun 509T mount
• 509T-specific mounting interface
• Quick-detach base
• Black anodized exterior