Oldzy, what is the length of that shotgun in the pics?
And 444, I think some mistakenly interchange the term "legal length" with "shortest length without any additional paperwork". ie an AOW Class III vs a simple 4473.
So what is the shortest length on a 4473 form can you have is a more appropriate way of asking the question.
But then again, some may think there IS a length that is illegal no matter what I suppose!