You may be in a pickle. 4 bores are not considered sporting arms by the ATF and they will deny applications for importing them. It may be a muzzleloader but because it is inline it is considered a modern arm. In summary, I do not think you can import that gun. It would be best to contact the imports branch directly and ask to speak to a specialist, (304) 616-4550.
Steve


Firearms imports, consignments


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