"ATF has been working on a ban of AR-15 "green-tip" ammunition for quite some time and has already issued the ban in its new, 2014 Regulation Guide." [Yes, the 2014 Reg Guide]
http://townhall.com/tipsheet/katiep...ned-common-at15-green-tip-ammunition-n1966761
http://townhall.com/tipsheet/katiep...ned-common-at15-green-tip-ammunition-n1966761
http://townhall.com/tipsheet/katiep...ned-common-at15-green-tip-ammunition-n1966761
http://townhall.com/tipsheet/katiep...ned-common-at15-green-tip-ammunition-n1966761