For future reference, you don't need a TV to watch events like the debates, as most establishment media outlets will stream such events live over the internet.
During the debate President Obama was asked a question about whether he favored reinstatement of the semi-auto carbine ban (referencing the earlier one from 1994). It wasn't a surprise that he responded in the affirmative. He suggested "introducing legislation", but he knows he doesn't have the votes with a republican controlled house to even think about it.
His comment about handguns was just a reference to his home area of Chicago, where "they don't use AK-47s, but use cheap handguns". I didn't pick up any inferences from that remark, and even if he intended to suggest going after handguns he once again knows he doesn't have the votes.
No reason to worry.