The problem with "80%" lowers is what 80% is completed. There is no 'standard'. And as such, some "80% receivers" could still be slapped on an upper and function it enough to fire a round.
You might not be able to insert a magazine, or perhaps there would be no hole in the buffer tower so the gun wouldn't cycle (single shot) but the way the law is written is that if it can fire a round, it's a receiver.
You might not be able to insert a magazine, or perhaps there would be no hole in the buffer tower so the gun wouldn't cycle (single shot) but the way the law is written is that if it can fire a round, it's a receiver.


















































