from there page...
BlackStar's process is a patented, electrochemical bore
polishing procedure that improves a barrel's inherent accuracy,
anti-fouling potential, and cleanability. The process simultaneously
micro-polishes and deburrs the surface while electrochemically
micro-machining the bore dimensions. It is completely non-abrasive.
sound like a fancy name for this
Electropolishing - Wikipedia, the free encyclopedia
something they have been doing to SS parts for years for surgical equipment
think of it as "super lapping"..
but it wont make the barrel last longer.. you could do it 1st, then nitride after