For the purpose of firearms law I hold dual residency in CA and MA and can legally purchase firearms in both states. Doing a search on NES I've seen posts stating that it is legal for a MA dual resident to purchase a MA-legal handgun in his other state of residence and bring it back into MA without transferring it thru a MA FFL, only requiring that it be registered with the state. In the discussions I've seen references to Fed law (the 1968 GCA & BATFE regs/rulings), but nothing concerning MA state law on this subject. Are there any references in MA state law or court cases that explicitly states that this is legal?