Personally, I think carrying a long-gun out in the open with no case would probably not be a good idea, especially in an apartment complex. Legal or not, some people dont know any better and all they will see is a shotgun in your hands. On another note, it might not be the best idea to display your guns in an apartment complex, seems thing to "dissapear" a lot more than one might in a house. Just do yourself a favor and get a case. I suggest a gun sock, doesnt get in the way and does the job. Just have it in your glove box for the times when you're transferring vehicle to apartment.