The C & H Precision Springfield Armory Echelon Plate is a specialized adapter designed to mount Holosun 407K, 507K, and C & H EDC series optics onto the Springfield Armory Echelon’s Variable Interface System (VIS). While the Echelon features a direct-mount capability for many optics, this plate acts as a critical filler and reinforcement layer to ensure a perfect, movement-free fit for the smaller "K" footprint sights. Precision-machined from 6061-T6 aluminum and protected by a MIL-SPEC Type III hard anodized finish, it provides the rugged durability required for duty or defensive use. The plate utilizes C & H’s patented replaceable 416 stainless steel T-nut system, offering superior thread engagement and making hardware maintenance simple and efficient. This American-made solution is the ideal choice for shooters who want to run ultra-compact, high-performance red dots on their full-sized Echelon platform without sacrificing stability.