Clean it remove the rust and give it a good coating of Eezox. My Taurus 1911 in blue had rust on the grip safety thumb safety and frame after a sweaty day at my last match and letting the gun sit overnight before cleaning. I removed the rust , quick cold blue and then a coating of Eezox. So far so good.
NRA Life Member, NRA Range Safety Officer, NRA Certified Pistol Instructor,, USPSA NROI Range Officer,
ICORE Range Officer, ICORE Match Director ,MAG 40 Graduate
As you are, I once was, As I am, You will be.