A 30 round mag, in pieces, isn't a complete mag. That being said a guy in BC was convicted of having a prohibited device as he had all the parts to make a complete prohibited, unpinned mag.
Given that example, having all the pieces for this lower, but just not having them bolted together isn't much different. It isn't like you need a machine to machine the last 20% together.
I didn't know about that case, very interesting, thanks for sharing.


















































