Kel-Tec KSG 12 gauge
This used KSG is in great working order and is MASSACHUSETTS legal, as it is a pump-shotgun. The shotty holds 6 full size shells in each of the 2 tubes, plus one in battery gives you 12 round capacity. If you load with Aguilla short shells, you get 12 rounds in each tube plus one, for a 25 round capacity. Great shotgun for home defense, as it comes equipped with rails for lights, lasers or other attachments.