If we really want someone to blame for the ATF's shenanigans with M855 ammo, I suggest we should look at the people who thought it was a good idea to write a law in such a way that it gave broad, legally binding, discretionary power to federal agencies full of unelected bureaucrats like the ATF. Also, as I pointed out in the thread over in L&CR, M855 does not meet the unusually specific criteria for "armor piercing" ammunition laid out in 18 U.S.C. 921(a)(17)(B) in the first place, so this whole issue should be a non-starter anyway.