New York state has a ban on all assault weapons. Assault weapons owned and registered before January 15, 2013 are exempt from this. Active and retired law enforcement are allowed to own assault weapons. Law enforcement may possess assault weapons.
Some states have restrictions, banns, or require owners to register firearms they conceder to be "assault weapons". The definitions of an "assault weapon" varies widely from state to state. These definitions can include whether the gun is fully automatic, the magazine size it can carry, and others.