Well, for example, imposing limits on the nature of the arms the average citizen can have, Rab.
I'm inclined to think, for example, that LAWS rockets ought not to be in the arsenals of private citizens.
I want our governments, as another extreme example, to prevent citizens from making bombs and owning bombs, or chemical/biological/nuclear weapons.
Do you agree?
Why shouldn't private citizens have LAW rockets? Keep in mind that a LAW is going to cost on the order of thousands and thousands of dollars and is a one-use item.
I heard about a fellow who had a howitzer. Brought it back in WW2. Every now and then he and his neighbor would get a junk car, put it in the field next to his farm and fire at it. A good time had by all.
In any case the 2A seems to refer to arms that a private citizen would own, e.g. personal weapons. A LAW or missile or whatever doesn't fall into that category.
There are tanks that are in the hands of private individuals. Arms dealers technically own all sorts of things, including fully armed fighter jets. Either that, or they manage to sell things they have no legal right to sell because they do not own them. The CAF owns B-29s, B-24s, P-51s, and numerous other fighters and bombers. One day they will have B-2s in their inventory. That is a few years down the road after they are completely obsolete, but it will happen.
Individuals should be able to buy anything they can afford. The government is quite able to keep track of anything that is really dangerous, and does so, even if it is illegal for them to do so.