hit up downrange designs for some cerakoting.
Make all the rails a dark earth or dark olive along with some trim while making most of it all black. Then just get a matte clear coat over it to ensure it stays that way for good
Would be cool to drill out the sights first and put in tritium rods
Hell, see if you can find some kind of small SMGish body kit over it and attach it at the screwholes for the rails