Found this:
The Stainless II features a stainless slide and frame for maximum resistance against the elements. Naturally, it comes with all of the features common to the Custom line, including match grade barrel, enlarged firing pin stop, slightly extended slide release, beveled magazine well and polished breech face.
Available in .45 ACP and .40 S&W.
Kimber make a great weapon. If I were to buy another pistol it will one of theirs.
FDXX75