This is way cool! Love it, love it, love it. It looks very well designed and crafted. I would really like to build this one.
Earlier you mentioned rolling the barrels with precut holes would cause issues. Do you think it would still be a concern if the printed card were prerolled/formed between 2 pieces of construction paper?
Now if we can just dupe - er . . ENCOURAGE someone into doing a Sturmgewehr 44.