Airsoft is legal in most parts of the world. Some countries have specific restrictions, such as maximum muzzle velocity and "unrealistic" coloring to distinguish them from actual firearms. They are legal throughout the United States, but restrictions do exist in cities like Chicago and Detroit. The states of New Mexico, New York and New Jersey, however, do not allow airsoft guns to be used or handled publicly because of the resemblance to real firearms. They may be used on private property with the consent of the owner. The U.S. Customs and Border Protection FAQ page states that Airsoft guns are considered look-alike firearms which require the special blaze orange marking.