One, or more of our duly elected representatives has been proposing repeal of the second amendment every year for the last few decades.
It never goes anywhere. Repealing an amendment, particularly one with such a long history and such legal support (unlike Prohibition) would be a long drawn out process, and we would have time to vote any and virtually all sponsors out of office, both at state and Federal level before it could be passed.
Most of the politicians know this, and won't touch the issue with a ten foot pole. The few others know there is no realistic chance of it happening, but endorse the idea in order to pander to their lunatic fringe constituants.
I wouldn't loose any sleep over it.