Thanks Ryan & guys. I actually have a old Professional gun that the Brother in law gave me 20 years ago.
He used it to spay fighter jets in the Air Force. It does great with primers and other paints.
Plus he gave me 2 touch up guns which are about half the size as the other gun
Then of course I have the cheapo's from Harbor Freight too.
The Flake size does not have to be big, I just want enough flakes so it's easy to see in the sun.
Kurt