If you believe Healey’s original announcement in 2016 and subsequent FAQ and letter from lead gun council Gary Klein - it’s legal.
However she also stated that she can change her mind at any time.
This was an edict that had no written law behind it.
The new gun bill might not grandfather pre Healey’s. Or, might not grandfather and guns registered before the new bill goes into effect.
Some people FA10ed post Healey AR’s but haven’t gotten in trouble.
The question remains if a new registration scheme is created. That could potentially give us amnesty like in CT.
There are so many lowers out there that they can’t arrest everyone and they don’t want to go door to door to confiscate.
We all need to wait what the new bill will say if you want to stay legal.
Some people don’t care.
Any ban will eventually make it way through the courts but it could take years.