As of this writing, and quoted from the informational FAQ on the AG site: Yes.
We are allowed, and won't be persecuted, if we engage in a personal transfer today.
This missive from the AG office is written so porously and so open ended it could change at any time with the addition or deletion of a single word.
Scary crap this outfit came up with.
Edit to ad, I would think the rifle does NOT need to be or meet preban however. But it's certainly not made totally clear. The language gives a date of
Prior to 7/20/16. that the rifle would have needed to be in your custody.
Snip from FAQ:[. Q: What if I already own a gun that is a copy or duplicate?
If a weapon is a copy or duplicate of one of the models enumerated in the law, it is an Assault weapon. But, as a matter of her discretion as a prosecutor, the Attorney General will not enforce the assault weapons ban against those who possess or transfer a copy or duplicate of a listed Assault weapon, if the weapon was obtained prior to July 20, 2016, when she issued the guidance.]
Here:
http://www.mass.gov/ago/public-safety/awbe.html
So maybe not pre-ban-ban
....I'm still not a lawyer...