In addition to the supply drying up, the climate towards "OMG! Those are weapons of war!" is so prevalent that I doubt military surplus will ever available again.
NRA Life Member
Me: "The .45 GAP was an answer to the question nobody asked."
Trooper pal: "Says the guy who thinks .38 Super and 10mm are viable pistol calibers and gets mad when Wal-Mart doesn't have them."