Now, I'd done enough research to learn that they only approve discrete calibers and I put "5.56mm" in that field. My mistake was in listing another upper for .300AAC under "Additional description". My thinking wast that if the additional upper was listed on the approved form that I'd be less likely to be challenged by any overly officious Johnny Law I might encounter. They still consider this to be Multi...
Silly me. Less truly is more. Turned the new paperwork around same day...
The good news is that this is said to mean I'm about 2 weeks shy of approval. I wonder how the criminals do it...
