Yep. One of THEM!
The guy did, supposedly, have a lot of parts, about $10,000 worth, but that's the DA's estimate and is it, even, true?
Let's say he had enough stuff to build 10 ARs and 10 pistols, that's not outrageous, at all.
The 2nd Amend says "The right to keep and bear arms shall not be infringed".