 
<translate> Q: Passage: 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 Harkokin Har Amintattun bindigogi sun zama hanyar da ta fi dacewa ta yin rajistar SBS 'tare da BATFE. Short-barreled muzzleloading blackpowder shotguns, akasin haka, ba su da doka ta hanyar dokar tarayya kuma ba sa buƙatar izinin haraji, kodayake suna iya zama ba bisa doka ba a ƙarƙashin dokar jihar. Kamar yadda yake tare da duk bindigogin da NFA ke sarrafawa, dole ne a sayi sabon hatimin haraji kafin kowane canja wuri. Dole ne a sauƙaƙe canja wurin tsakanin jihohi ta hanyar lasisin lasisin bindigogi na tarayya (FFL) yayin da canja wurin cikin jihohi na iya kasancewa tsakanin mutane biyu.  Tambaya: Bisa ga wannan nassi, menene mafi ƙanƙanta tsawon doka na bindiga? Bari mu ba da rafi na sani na farko: <eng> Q: Passage: 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. Title II), without a tax-paid registration from the Bureau of Alcohol, Tobacco, Firearms and Explosives, requiring a background check and either a $200 or $5 tax for every transfer, depending upon the specific manufacturing circumstances of the particular sawed-off modern shotgun being transferred. Gun trusts have become an increasingly popular means of registering SBS' with the BATFE. Short-barreled muzzleloading blackpowder shotguns, in contrast, are not illegal by federal law and require no tax-stamped permit, although they may be illegal under state law. As with all NFA regulated firearms, a new tax stamp must be purchased before every transfer. Inter-state transfers must be facilitated through a Federal Firearms Licensee (FFL) while intrastate transfers may be between two persons.

Question: Based on this passage, what is the shortest legal length of a shotgun barrel? Let's give stream of consciousness first: 