 
 <translate> This is the relevant information: Under the National Firearms Act (NFA), it is illegal for a private citizen to possess a sawed-off modern smokeless powder shotgun (a shotgun with a barrel length shorter than 18 inches ( 46 cm) or an overall length shorter than 26 inches (66 cm) ) ( under U.S.C. Therefore, the final answer is 18 inches ( 46 cm ). <hau> Wannan shine bayanin da ya dace: A karkashin Dokar Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Harkokin Har 