Not to bust your chops Storm, but an AK would be as hazardous to the folks in the apartment next to you, as it would be to a home invader. Rifle fire will penetrate most apartment walls, interior and exterior, like a hot knife thru butter.
Even handgun ammunition can penetrate interior wallboard somewhat easily. A couple years ago a Portland nitwit was fondling his SKS while it was loaded, and he somehow pulled the trigger. The 7.62x39 bullet passed thru his ceiling and into the head of a girl sleeping in the apartment above him. She died instantly. I believe he was tried for negligent homicide, and was convicted of that crime. I don't know what his sentence was.
I'm NOT saying that you are a goofus like this guy, but if you happen to miss your target in the dark, you can't call that bullet back. Not telling you what to do, but if I was in your housing situation I would rethink my defense strategy.
Michael