I've got Ameriglos on my entire stable of M&Ps. I recently noticed surface rust on the rears on the gun I predominately carry. It has become warmer here in the past week so I'm thinking my ridiculous amounts of sweat quickly overpowered the seemingly light finish of the rears. I would understand rust due to sweat but it seems like a week is a short amount of time. I've since cleaned and oiled the rears.
I also got around to cleaning the Proglo front on this particular carry gun. I used q tips and simple Hoppes gun oil. I noticed that the several q tips I used turned slightly orange. I can't tell that paint is coming off of the front sight by looking at it but paint is turning the q tips orange.
Anyone have experience one way or another? Thanks!