Don't worry, corrosion is a constant concern for firearm owners (Or should be). I've found corrosion on 416 Stainless and even on the underside of a Glock slide I bought off ebay.
Brass wire brush, careful glass bead blast with clean media or fine scotchbrite and a careful touch. Sweaty hands put salty sweat between grip panels and frame. Detail strip it, clean all metal parts with spray brake cleaner and allow to dry. This'll leave it totally oil free and allow you to see any corrosion under a bright light and reading glasses if needed. Clean the backs of the grip panels with spray cleaner and dry to remove any salt.
A super thin coat of grease may help under your grip panels- not because it's a better corrosion preventative itself, but because it stays put longer than liquid lubes. Unless your house is really humid or has big temperature swings, I wouldn't worry about corrosion re-starting, other than maybe pulling your grips off to clean after shooting with sweaty hands.
Go out and put 500+ rounds through it in an afternoon, it'll make you feel better about the pistol.
Brass wire brush, careful glass bead blast with clean media or fine scotchbrite and a careful touch. Sweaty hands put salty sweat between grip panels and frame. Detail strip it, clean all metal parts with spray brake cleaner and allow to dry. This'll leave it totally oil free and allow you to see any corrosion under a bright light and reading glasses if needed. Clean the backs of the grip panels with spray cleaner and dry to remove any salt.
A super thin coat of grease may help under your grip panels- not because it's a better corrosion preventative itself, but because it stays put longer than liquid lubes. Unless your house is really humid or has big temperature swings, I wouldn't worry about corrosion re-starting, other than maybe pulling your grips off to clean after shooting with sweaty hands.
Go out and put 500+ rounds through it in an afternoon, it'll make you feel better about the pistol.