The door was open so I stopped in and spoke to Jack today.
The showroom is a pretty good size, maybe 30' x 30', with cases on 3 sides and rifle racks behind each case. There are some shelves in the center for ammo and some displays on the front wall. The only stock in the room is a small pile of ammo, a few steel ammo boxes and some pre-ban PTR91 magazines.
The current delay on opening is the state FFL. For several reasons, the Ipswich PD has been slow processing the application. The paperwork is now done and the FFL is expected in another 10 days, so Jack hopes to be open by the end of the month.
Jack plans to start with a small number each of a wide selection of firearms and see what sells in the area. He will not initially be stocking shotguns other than HD/tactical.
He plans to have his staff qualify as armorers for the major firearm brands.