HVM is a two-show kit that supports various non-OEM chassis systems as well as the KVC M14 modular monocular housing as a multi-sided dovetail interface. The top/helmet shoe affixes securely via anchor hardware for head-borne use, while the bottom/weapon shoe adapts to the legacy thread station. The kit may be divided between two separate monoculars. The HVM is not for use with typical/legacy upper monocular housings. See KVC OSS for adaptation options for legacy monocular devices.