Rust is a common problem for MLRS (Multiple Launch Rocket Systems), as it can cause the rockets to malfunction or even explode. There are a few different ways to fix MLRS rust, depending on the severity of the problem.
For minor rust spots, you can use a wire brush or sandpaper to remove the rust. Once the rust is removed, you can apply a rust-resistant primer and paint to protect the metal from further corrosion.