Actually NJ is not the second most restrictive state, you are allowed 15 round magazines and can still buy AR15 and M1A rifles that doe not have bayonet logs or flashiders.
The order of badness is something like this:
California
Massachusetts
New York
Hawaii
Connecticut
New Jersey
Maryland
so New Jersey is only the 6th worst state in the union.
But you have to keep them at home or cased and unloaded for transport to the range. Take one out in your yard to defend your property in a riot and you become a criminal. Carry permits require proof of need to carry, and if you're not connected the proof is never enough.