As soon as things cross state lines, it can be construed as "interstate commerce" and it becomes a federal issue.
Commerce? Are they selling the weapon?
The federal governments powers are supposed to be very limited, and one of their powers is to regulate commerce between states. However, some corrupt/stupid court construed anything happening in one state can be regulated as interstate commerce, giving rise to all sorts of federal laws that regulate things that were never supposed to be regulated at the federal level.
The only way to that seems to undo those federal laws are to create state laws that contradict the federal laws and also explicitly prohibit the activity from crossing state lines.
(post is archived)