Idiots behind the gun counter huh? Well it just so happens that I'm one of those idiots that works at the Dicks Sporting Goods in Waldorf. Even though the OP lives in MD we have no way of verifying that. His permanent duty station is in DC, and his drivers license says he lives in Montana. If his permanent duty station was in a state that bordered MD or he had a MD ID or an ID from a state that borders MD this wouldn't be an issue. It MAY be legal for the OP to purchase a long gun out of state, but we don't keep detailed records of every gun law for every state. We only sell to residents of bordering states because we know there won't be an issue, the last thing the company needs is for us to sell a firearms to a NJ or CA resident and have our FFL revoked.