Just bought a copy of a surplus firearms magazine off the newsstand -- the editor's column said it's the last issue. They are ceasing publication. One of the reasons he cited is that they can't find writers who know anything and are willing to write about the old guns but I suspect a large part of it is also that supplies of guns and parts are drying up and they must be having problems finding advertisers.
Unless we get the laws changed, there won't be any surplus stocks of current military long arms. Everything is full-auto or select-fire, and those can't be sold to the proletariat.