Just finished Duracoating it and a few other guns. It came out pretty good, a lot better looking than the desert factory camo job it came with. As soon as it cures a bit more, I'll assemble it and post some pictures of it.
I have discovered what caused the barrel to not want to come out initially. As was pointed out, there is very little space between the fake mag extension and the round piece of metal it must pass through to secure the nut. I found this out as I attempted to assemble the weapon. The very light coat of Duracoat that I had sprayed on the tube and on the inside of the metal ring was too much to allow the tube into the ring. I remember seeing some of the factory beige coating on the inside of the ring after I had taken it apart. I believe this to be the source of my initial problem.
I sanded the inside of the ring down until the factory beige was also gone. I had to also remove some of the Dura coat on the tube to allow it to fit properly into the ring. That said, there are a few areas I'll touch up later on but for the most part I am happy with the outcome.
for some reason I cannot upload photos. I get a message saying I am maxed out on photos but I have never uploaded anything and I don't see a way to delete anything.
Here are the links to the pictures .
BEFORE
AFTER 1
AFTER 2
BONUS