I really hope this does prevail. I should be able to walk into my LGS and walk out in 10 minutes with a suppressor I paid <$50 for instead of filling out a ream of paperwork, pay an extra $200, and wait a year or two..
It attacks from several aspects, but one is that making your own silencer is not covered by the commerce clause.
It would be extremely important, if this were upheld, but, technically, it does not cover the commercial sale of silencers.
Heller makes mention of the ability of the federal government to regulate commercial sales.
Paxton is in this to win...
It is a tough fight, but he has a real chance of prevailing, it seems to me.
One of the chief threats against it is the claim the State of Texas has no standing to sue.