American Defense AD-509T Low QD Mount for Holosun 509T

Description

The AD-509T QD mount from American Defense Mfg was developed specifically for the Holosun 509T red dot and for use on AR pistols and other compact platforms that require a small, lightweight optic. It is a one-piece unit, precision machined for consistent fit and alignment. Construction uses aircraft-grade material and a hard coat anodize finish for durability. The mount features American Defense’s Patented QD Auto Lock Lever system to accommodate both in-spec and out-of-spec rail systems.

Key Specifications

• The model is AD-509T.
• Fitment is the Holosun 509T footprint.
• Height designation is Low.
• Construction material is 6061 T6 aluminum.
• Finish is Hard coat T3 Mil-Spec anodize.
• Mount type is Quick Release (QD).
• Locking feature is the Patented QD Auto Lock Lever.
• Intended use is for AR pistols and compact platforms requiring a small red dot system.
• Color is Black.

Designed for shooters who need a compact, repeatable mounting solution, the AD-509T combines precision machining and a robust QD system to deliver secure optic attachment without excess weight. Its low profile supports compact sighting geometry while the anodized 6061 T6 aluminum construction provides lasting durability in field use. The patented Auto Lock Lever eases on/off installation and helps maintain consistent alignment with minimal fuss.

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