The AM DEF HOLOSUN AEMS QR LOWER 1/3 from American Defense Manufacturing is a precision optic mount designed to bring fast, repeatable optic seating to your Holosun 510C with a Lower 1/3 height that keeps the sight above the boreline for improved cheek weld and obstacle clearance. Built on a rugged Picatinny rail interface, the AD-AEMS leverages a quick release mechanism that delivers secure, repeatable attachment and effortless detachment, enabling rapid optics swaps in field or range settings without tools. Finished in durable black anodized coating, this mount combines corrosion resistance with a sleek, low-profile silhouette that maintains a compact footprint on your rifle or carbine. The AD-AEMS-11-STD is purpose-built as an optic-specific mount within the Scope Bases & Mounts category, ensuring a precise fit for the Holosun 510 series while preserving full access to controls and zero retention. Ideal for tactical, hunting, or competition setups, this mount offers dependable stability under recoil and varying environmental conditions, helping shooters maximize sight performance, enhance targeting speed, and maintain a consistent point of aim across sessions.