One of the brothers is/was a green card holder. I was going to ask why he could buy/possess a gun, but apparently green card holders can buy a gun by federal law, at least. I did not know that.
Anyhow, I am still curious as to what guns they had if they were legally purchased/possessed in Massachusetts.
This sounds like a good rule change. I think it is prompted by a court ruling that the ATF overstepped its authority when it made the 90 day rule.