That completely depends on the grade/composition of the stainless steel. Saying stainless steel is an alloy, and there are many different alloys which are labeled as stainless steel. However, my main point is that whichever alloy is employed, the stainless steel commonly sold does not have the tensile strength of carbon steel. Consult a metallurgist......
Anything can corrode. Certain grade of SS are not going to corrode when only exposed to moisture a travel trailer would experience in normal use.
And LEO (the lion) is a stellar constellation, but as Donna uses it, she means Law Enforcement Officer. And any LEO worth his “salt” is going to maintain his sidearm properly.