What if the reciever was sold as "other" then it shouldnt matter should it? I could see if you bought it as a rifle but as "other" arent you able to do whatever you want. How would the Feds know what i used it as. I could be wrong thats why Im asking
No, how the receiver was sold has nothing to do with the pistol vs rifle thing. Any receiver, even if it was sold and marked as a pistol, cannot be made into a pistol after having a stock put on it.