It looks like Silent Thunder Ordinance (maker of Falx moderator) have posted a number of free STL files for download from their website.
One such file is a tool to remove the Crown’s shroud cone.
If you know someone with a 3D printer, they can print you the tool for future use.
The FX Crown’s ultralight barrel has a unique faceted end which can be a challenge to grip in a non-marring fashion. This custom wrench part is designed to grab onto those tapered facets with the aid of a vice (or similar) allowing it to be unscrewed from the main tube. This facilitates the changing
www.silentthunderordnance.com
-Ed