Armament Systems and Procedures (ASP) has just released their Nexus subcap. It is designed to provide a secure, lightweight clip-on retention to all ASP Friction Loc Batons. The Nexus contains a rapid release clip and chrome plate retaining spring and can be used on tactical or dress belts.
www.asp-usa.com/store/batons/accessories/nexus-subcap-baton-clip-f-series