The American Defense AD-509T QD mount was developed for the Holosun 509T red dot, for use on AR pistols and other platforms that call for a small, lightweight red dot system. This is the low-height version.

The mount is one piece, precision machined from 6061-T6 aluminum and finished in hard coat Type III Mil-Spec anodize. It uses American Defense's patented QD Auto Lock Lever system, which accommodates both in-spec and out-of-spec Picatinny rails. Adjustment needs no proprietary tools: your finger or a flat-blade screwdriver will do it. The lever can be set to lock toward the front or toward the rear, so you can keep it clear of your other gear, and the clamping surface is shaped for maximum rail engagement.

Features:

• Made for the Holosun 509T
• Low height
• One-piece 6061-T6 aluminum
• Hard coat Type III Mil-Spec anodize
• Patented QD Auto Lock Lever fits in-spec and out-of-spec rails
• No proprietary tools; adjust by finger or flat-blade screwdriver
• Lever locks to the front or the rear

Before you order: confirm the low height suits your platform and how you want the dot to sit relative to any iron sights. After installing, check the lever tension on your rail, then confirm zero at the range.