A guy I work with said his son got a letter from the ATF stating that he had 30 days to send in the numbers on his M4, or face a search and seizure. This is related to Obama's list, (6 or so guns named specifically, he couldn't remember which ones). I am assuming we're talking about the civilian version of the M4, or course. A quick internet search led to nothing, no list or anything. Has anyone heard of anything like this?