Originally Posted by
BehindBlueI's
I'm not sure from a legal standpoint. Readily convertible would mean even if you assembled the parts yourself once they were in the same place it'd be the same as if you bought them together but if they aren't in the same place they aren't yet readily convertible. Constructive intent, I believe is the term.
Parallel: A pistol upper isn't an SBR if it's sitting by itself, it's just an upper. A rifle lower isn't an SBR by itself, although it is a firearm. If they are together in a range bag, even if it's not attached, is it an SBR legally? I believe the answer is yes. So what components something is in the proximity of to determine it's legal status isn't unheard of.