Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3818578092
Mods=AttachmentSlotVisibility
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Hide Mounted Gear3818578092 | 70 | description footer |