americans don't like short barrels on double guns as they're like skinny neckties you know. lack of name recognition and quad underbite system also scares them as it's usually associated with the dreaded french guns.
ps. the euro 2&3/4 chamber version with fixed chokes and false plates was better as the weight was in 6&3/4lb range and poor wood to metal fit at head of stock was not noticeable.