The FAST FTC OMNI magnifier mount uses a force-to-overcome mechanism, stowing the magnifier below the optical sight plane and within the footprint of the weapon's receiver when not in use.UNITY's FTC (flip-to-center) technology cancels the flip-to-side placement of legacy products, eliminating snag hazards and occlusion of sight pictures when stowed. Compatible with various magnifiers, it comes standard with a low-profile integrated FAST QD Lever. While some optic combinations may slightly occlude sight pictures when stowed, most will not.