I forgot something. To remove that, do NOT use a Dremel tool. Get a piece of 400 gr and make your strokes on the flat surfaces with the grain if it has a brushed finish. Don't make back and forth strokes. That'll just make a valley that will never go away. When you're at the end of your stroke, pick the pad straight up. Then you can blend it in with similar strokes with a Scotchbrite pad. Might take a little while but it'll look tons better and might even get rid of the mark completely.
Awww come on yall! Dont act like you never scratch a gun.
My 45's have those marks on them. Some times it get a little difficult to get that stupid pin in there when you got purple finger nails and busted up knucles.