I've been carrying a S&W Shield this summer in a PJ Kydex IWB holster. Been looking it over every once in a while but Kydex doesn't absorb sweat and these plastic pistols are pretty easy to maintain.

The pistol has a SS slide with a black coating on it and shows no sign of rust which is saying something considering the Oklahoma humidity can rust uncoated SS like it did on a Sig 230 I carried years ago. So I became a little lazy or over confident until today.

I went to drop the magazine and guess which part ain't SS or coated? Yep the mag release wouldn't move. I finally forced it open and found it rusted on the inside. I cleaned it and coated it with frog lube but I will keep an eye on it.

Just a heads up.