Echelon™ 4.0C - Springfield Armory®
This guide details the installation of an optic onto the Springfield Armory Echelon 4.0C using its proprietary Variable Interface System (VIS). The process emphasizes using the correct VIS pin for optic compatibility and ensuring secure mounting. Instruction is informed by the expertise of Travis Haley and Rob Leatham, highlighting the pistol's design for high-stress scenarios.













