One of the things that makes it to many AW feature lists is a threaded barrel. For some time I have had an idea for muzzle attachments that could attach to a barrel without the need for threads. Im not talking ugly split shaft collars either. Has anyone seen such a device? Think 5c collets,jacobs chucks or Fenner Trans Transtorque keyless bushings to get an idea of what Im thinking in a simplified form. My idea is nicer and cleaner though. Thoughts?