Yeah, I am gonna have to pick em off pretty quick with only 18.5" barrel. For one thing you need to find out if your apartment allows firearms. Ohio's Castle doctrine was mad law June 10th 2008. Part of the law reads: If you signed your lease after the date this went into effect, they cannot ban you from having firearms. If you signed a rental agreement before June 10th 2008, check your paperwork for a firearm clause. If there is something about them not allowing, I don't know how or if you can get around that. You must be 18 to buy long guns and 21 to buy handguns from a dealer in Ohio. (I think those are the ages.) There is more to the ages I'm sure, I just don't know the specifics. No classes are required to own them inside your residence. Although remember without a concealed carry permit you cannot walk outside with a loaded handgun concealed on your person. Ohio is an open carry state so you can walk out with a loaded handgun in plain sight on your hip or a long gun. Although I highly recommend against doing this at your place. Remember out of sight, out of mind. If you buy a gun from a store, you will have to have an instant background check done. If it passes, you walk out same day with the gun. I am not a lawyer and this is worth exactly what you paid for it, zilch. check out buckeyefirearms.org, ofcc.org and codes.ohio.gov.