So I have heard a thousand different things regarding Class 3 stamps and what things one can expect if he gets one. Some say nothing will happen, some say it won't happen but it could, and some say the ATF is going to check your colon. Is there anybody who has a real working knowledge of this? I don't mean someone who "has heard" or "thinks", I mean does anybody know the facts? I tried to look at the ATF website, but since I am rather uneducated about Class 3 stamps it was more than difficult to navigate. (I am sure that is purely "accidental" on their part) I appreciate your help!