There are two camps on this 2nd amendment debate - One group claims they can read the amendment to say the feds can or should restrict ownership - the other group reads the amendment and sees the right to bear arms. The question is what are the 'arms'. Today the common wisdom is firearms, rifles and pistols. But arms really means cannons, bombs, etc. Back in 1934, they passed a law that defined automatic weapons, saw off shotguns as illegal. Hence the gov't has already defined what the 2nd amendment is all about. If, in 1934, they said how big the clip could be we wouldn't be arguing it today.