That's a ruling. They need to make a better one.
The constitution can be amended and / or re-interpreted and laws change all the time.
The right has already had conditions placed on it ... just add some more. Nothing mandates the type of arms or the quantity. Are people allowed nukes? No - that would be crazy. We just need to find a better line of where "crazy" starts. An arsenal of weapons is crazy.
It just needs some political will.
I have no problem with some restrictions. Background checks are reasonable. Here in Washington State it's illegal to take a gun into a bar even if you have a concealed carry permit. I've known since I was a kid that guns and alcohol don't mix. This is a reasonable restriction.
Food for thought, how do the members of this board advocating reasonable restrictions on guns feel about reasonable restrictions on abortion?