27 CFR §447.63

Whoever knowingly imports into the United States contrary to law any article on the U.S. Munitions Import List; or receives, conceals, buys, sells, or in any manner facilitates its transportation, concealment, or sale after importation, knowing the same to have been imported contrary to law, shall be fined not more than $10,000 or imprisoned not more than 5 years, or both; and the merchandise so imported, or the value thereof shall be forfeited to the United States.