...do not exist if you are speaking of those made by Fabrique
Nationale, the original manufacturer of the design. This holds true whether
the pistols are sold under either the FN or Browning logo. None of
them are stainless...not a single one.
That does not mean that some may not have appeared to have been of
stainless-steel construction. Some Hi Powers imported by Browning Arms have
sported both electroless-nickle or hard chrome finishes, either of which may
be confused with stainless. Electroless-nickle tends to have a slightly
yellowish hue to it while hard-chrome does not. It is either white-colored
or sometimes appears a very pale light blue.
Several years ago, a company called Baford Arms did produce stainless steel
Hi Power style pistols but they have long since gone out of business and
there is currently a company in Florida producing both slides and frames of
stainless construction. Some aftermarket Hi Power parts have been
manufactured in stainless but FN has not manufactured any
stainless-steel Hi Powers.
On some auction sites, FN and/or Browning-marked Hi Powers are being
advertised as being of stainless steel construction when they simply are
Such Hi Powers can indeed be very fine handguns and either
electroless-nickle or hard chrome does enhance corrosion-resistance but the
pistols are not stainless steel.