if you're considering ordering stuff from Europe...

[JKV45]

Yes, I have bare pipes (not stainless) and all it takes is 5 minutes with WD-40 and a scotch brite pad every couple weeks.

There are some decent corrosion inhibitors available that would probably be more effective.

WD-40 Specialist Corrosion Inhibitor (not the regular WD-40) as well as Stabil Corrosion Inhibitor are decent.

There are also firearms cleaners and oils that are very good at preventing rust (seeing as how your screen name is 38 Special) I use Hornady One-Shot on a lot of things besides firearms.

Here is an article that includes corrosion tests -

https://dayattherange.com/gun-care-product-evaluation/

Another -

https://www.youtube.com/watch?v=fibRewlndLg

[DesmoDrew]

  Thanks for the kind words and info.  Don't want to hijack the thread, since the point was mainly about an international purchase and the pitfalls, or lack of, that I encountered. 
  The 'stainless' is non-magnetic, so maybe a decent grade.  I fully expect it to turn blue, and develop some surface corrosion over time.
  I will post a picture and some info in Show Off when mounted
Thanks again.

[m in sc]

that is sweet.

I have some stuff coming from Australia,  will report back. it def depends on declared value and shipping service used, to some degree