Technically, given the clear wording in the US constitution, there is not much space for interpretations and therefore a debate.
There is, actually. The whole 2nd Amendment seems to be about state militias and people have taken it to mean instead personal ownership, which can reasonably be argued to be an abuse of the original intent of the text.
A militia is always a peoples army. Look at Switzerland, which has a strong militia system. All men who served in the Swiss army have their equipment at home. That includes their assault rifle. Up until a few years, they also had to store their ammunition at home.