Have you ever seen or read about people charged with having unregistered weapons in their possession? What does this mean? When you buy a weapon a fill out the BATF background paperwork, you are merely being screened to see if you can buy the gun....it doesn't mean the sale went through. Are there state laws requiring you to 'register' your weapon with the sheriff, court-house, etc? What about buying a gun from another citizen...I know some states require a FFL transfer but many do not. So where does this 'registration' come into play?