Deputy, the full quote is:
"All stressed components of the Southpaw, such as the barrel, cylinder and internal parts are of 416 stainless steel, making for a hardy and rust-resistant pocket revolver. To keep the Southpaw as light as possible, the frame of the revolver is constructed from 7075 aluminum alloy with a glass-beaded matte finish. In addition to the lightweight frame, the Southpaw also employs a dull gray polymer trigger guard assembly and grip frame to further reduce overall weight."
And good to hear the Bulldog is all steel.