Not familiar with NC, but, if you have a legal right to be there (leased property) then you should be good to go. You are a tenant after all. Now, does your lease stipulate that tenants are not permitted to bear arms? If not then you should be good to go. Generally speaking, signage applies to the general public.
read your lease agreement and go from there. As long as you comply with the law and your lease agreement there should not be any consequences until your lease is up.