Has anyone here had any experience with refinishing their AR upper or lower receivers? Most of them are coated by the manufacturer, and I'm not sure how well a paint would stick to it. I would like to put a matte finish in a stripe gray/black camo over the handguard, receiver, barrel, stock, etc. I can imagine spraypaint is just going to flake or smudge off and make a big sticky mess, not to mention making the serial numbers illegible. Gun coats are typically shiny and I don't see it adhering to coated aluminum very well. Maybe if I removed the finish, but that might compromise the material, I would think. Don't have any experience with this, but I don't want the shine. A solid matte color would work if anything.