Here's a Colt 6720 I painted a few years ago. First it was camo, then solid green over that because the camo was hideous. The green was even more hideous, so this weekend I decided to try and strip the paint all off and go back to black. I gave up working on the furniture as I'm going to change it out anyway, but the rifle and optics didn't come out too bad. I mostly used Citristrip, and it would take one layer off at a time. I had forgot to do the charging handle so it is soaking now.