I thought it was very difficult without a brick and mortar store...
They virtually eliminated the kitchen table dealers under Clinton. They demonized them as only wanting an FFL to buy weapons, not to sell them.
You can't have "by appointment" hours, must be open and available for inspection during those hours, so, yeah, a brick and morter store is almost a requirement. Unless you're manufacturing/distributing out of a facility.
ETA: I believe they can decline to renew based on inactivity, etc.
This post was edited on 12/17 at 1:40 pm