As I tried to point out earlier, and you apparently didn't get it, yes ATFE has a problem with silencers. No, its not legal to have one now without getting a "mother may I" from ATFE and paying your tax. That is a law that should be changed and this kind of thing (varmints) is the reason why. God Almighty didn't write "Thou shalt have no suppressors." Humans made the mistake of passing that law.
Sorry I didn't understand the ATFE thing. I knew that the BATF had objections. Just wanted to make it perfectly clear about the legality of silencers.
Good Hunting... from Varmint Al