ADM AD-509T-10-STD Holosun 509T Co-Witness Red Dot Mount w/STD LeverThe American Defense QD Mount with Standard Lever for Holosun 509T is a robust and versatile mounting solution designed for the Holosun 509T red dot sight. Crafted from 6061 T6 aluminum and finished with a hard coat T3 Mil-Spec anodize, this ADM AD-509T-10-STD mount offers exceptional durability and a sleek appearance. The patented QD Auto Lock Lever system ensures a secure fit on both in-spec and out-of-spec rail systems, providing absolute co-witness optic height. Perfect for AR pistols and other lightweight platforms, this mount guarantees reliable performance and easy adjustments. ADM AD-509T Holosun 509T Co-Witness Red Dot Mount w/STD Lever AD-509T-10-STD