Like others have said, some will, and some won't.
The AG won't go after them if they ship to an 01 or 07 FFL (Dealer or Manufacturer), but many larger business have determined that they don't want the risk.
This includes Aim Surplus, CDNN, and others. Its really too bad because when some of these larger reatailers have specials, the cost is often lower than wholesale through normal distribution channels for small dealers.
CDNN will not ship ANY semi-auto to a FFL in MA.