Henry Golden Boy Cantilever Scope Mount Model GB-CSM To optimize accuracy, Henry Scope Mounts are available for all Henry H004 series Golden Boy and H006 series Big Boy models. Each of these rifles now come drilled and tapped for easy scope mount installation. The Golden Boy rifle's are drilled and tapped under the rear sight to facilitate fitting of the Cantilever Scope Mount. Instructions on installation of the scope mount is provided in the packaging. All Henry Scope Mounts accept Weaver style detachable 1 top mount rings (rings not included).