5418 Anschutz barrel extension

[Guest]

I'm new here and looking for some info on a sillhouette Anschutz 5418. It has a threaded barrel extension, which look something like a internally threaded choke tube for a shotgun. Mine was buggered by a previous owner and I'm looking for a replacement. Anyone seen one like this and know where I might find one? I'd even settle for a thread protector for it.


thanks