As always, IANAL. However, they are not legally allowed to prevent you from having a gun in your residence or your car or from transporting said gun from your residence to your car and back. This is assuming you are legally allowed to possess said gun, of course. They can say they will evict you if you do so, but you could sue them for doing so. They can restrict you from carrying while walking around the complex, while in the office, at the pool, going to check the mail, etc. That's about it, though. Just conceal when going between car and apartment and don't worry about it. I guess if you have long guns you might get a case for them so that you aren't just walking to your car with a gun in your hand. That's your call, but legally you really should be fine. If you want confirmation about exactly what they can and can't restrict you might post in the Ask the Lawyers section, or search to see if someone has already asked about this. Hope this helps.