[bvw]

A ceramic barrel and firing chamber wound tight with a strong polymer wire shoulk work for multiple firings. Haven't seen one yet.

[RedBloodedAmerican]

Sig Pro?

Also a company not far from me owns the rights to a design they made years ago for the military. Red Eye Arms, Inc.

Just because the public and even some LE agencies and military don't know about it, doesn't mean it doesn't exist. If theres a ban, theres a reason for it.