We are in agreement. If someone wants to buy a firearm in the US there are many ways they can do so to skirt government oversight.

But it would still good true that if you ban the sale of certain firearms, the number of people that own said type of firearm will go down over time. Simply introducing a barrier of entry is enough to deter at least some people from buying that specific firearm.

That to me is fine. I don’t think we should overspend our resources trying to do this. Just start with the low hanging fruit with the highest roi.