In colonial times, wasn't militia service often mandatory?
Nonetheless, those would be local laws -- over which the founders may have intended no federal government should intervene -- not a federally recognized right to private possession of a particular category of item.
There's a debate to be had over which view of the 2nd amendment is the proper one, but the history of its judicial interpretation is more certain, I think. As with other 5-4 SCOTUS decisions, Heller is currently the law of the land.
When you look at the Constitution as a document that doesn't say "this is what you're allowed to do", but instead says "The government can't take these away", then it makes more sense. The states were saying 'we want you to have this" and the 2nd says "the feds can't take it away." This goes down the whole states rights rabbit hole that people are arguing about with both Firearm and Marijuana laws lately.
If that's your perspective, then would you agree with an argument that the constitution doesn't prohibit a state from restricting individual ownership, even if the federal government can't restrict individual ownership?
I'm not exactly sure. On one hand, it seems like common sense. On the other, you have to grant equal weight to other discriminatory laws, which would allow states to pass racial or orientation oppression laws.
Yeah, it's a sticky issue, honestly. The way I generally look at things is this: laws must be fairly applied (and not just superficially fairly).
For example, a law that discriminates against people of a race or orientation is wrong on equal protection grounds, rather than substantive due process. If I say blacks can't do X, but asians may do X, then that is a fundamentally unequal law and can't be justified. On the other hand, if I say no one may do X, then it's not inherently problematic.
That's why, in my line of thinking, you may implement gun restrictions, as long as they apply to everyone.
It all boils down to the thought that society shouldn't impose restrictions on certain members of society that those imposing it wouldn't be willing to live under. The example of "superficially equal laws" is around orientation. Of course someone could argue "all people may enter into heterosexual marriages" is "equal" on its face because it's a right available to everyone, but clearly it has an unequal effect in practice. For the record, I don't think government should be involved in defining marriage for anyone... if there's value in the rules around that bilateral contract, then it should be available to any two people who are legally able to enter into contracts and should be referred to in all cases as a "civil union." Leave the marriage label to the churches.
I guess an exception would be Person under 18 can't do X, but people 18 or older may do X. However, I can reconcile that by pointing out that a person under 18 is not a "full legal person" under the law. It's a bit conclusatory, but I'm ok with that level of discomfort.