wear marks

[mp 10 lover]

I have 2 shiny spots on my upper where my charging handle has drug. I am changing out the handle, is there any thing I can use to touch it up and not look to bad?
Thanks

 

[Little Creek]

I have 2 shiny spots on my upper where my charging handle has drug. I am changing out the handle, is there any thing I can use to touch it up and not look to bad?
Thanks

I have one such wear mark on mine.

 

[MichiganScott]

I own four AR's and all have those marks. They don't look bad. They look like someone has actually used them.