Just thought of a trick you can use for sanding down the sides to make them smooth and consistently curved again.
First off you'll need a few sheets of wetordry sandpaper. Get 240, 340, 400, 600 and 1000. You'll likely need two sheets of each. Tear into 1/4's and then again into 1/8's. Fold the small peices into thirds so they lap over each other. Cut a pop can up using scissors and slice the curved part lengthways into strips that are as wide as the inside of the folded sandpaper. Slip one or two bits of the can into the folds to support the paper when sanding. Now, using water in a bucket or similar with a few drops of dishwashing liquid (regular, not the stuff for the machine) or some bar soap swished around wet the sandpaper and sand the dremeled sides until they are not all wavy. From there go up to the next grit and remove all the scratches from the first. Then the next grit and so on until it's a dull polished look from the 1000 with no scratches from the previous grit paper.
Once there you're ready for paint or for some mag wheel polish and proper cleaning and new anodizing. Yes, it IS a lot of work and your arms and fingers will be tired but at least your gun will look nice...
I just thought I'd take a quick peek and then the world went all yellow.....