Concealed beneath the slide cover plate is the Echelon’s patent-pending optic mounting system. The Variable Interface System (VIS) allows users to mount over 30 optics directly to the slide without the use of adapter plates and employs patent-pending self-locking pins to complete the most advanced optics mounting system on the market. As the mounting screws are torqued to spec, the pins exert lateral pressure on the optic’s interior mounting surface to eliminate variance and left/right movement. The result is an unparalleled fit between the slide and a wide variety optics.
