As far as I'm concerned along with some common sense - If it doesn't require a tax stamp and an FFL transfers it to me after entering it into the system and doing my background check then I am legal. Period.
If the state doesn't want them sold here then they better implement processes to...
Frankly, I think people are overreacting in a big way.
(1)FFL's can and do transfer this firearm in Oklahoma and have in very large numbers.
(2)They can do so because no tax stamp is required and it is classified as a "firearm", not a shotgun which makes Oklahoma law about sawed off shotguns...