Uhmmm...this magazine article begs to differ...
http://xairforces.com/newsd.asp?newsid=680&newst=10
...please note the line in the article:
“Last month, Hawker Beechcraft completed weapons drop tests with the AT-6, a modification of the successful T-6 primary trainer on which all U.S. military pilots graduate.” :)
Yeah, those were tests of the Advanced Precision Kill Weapon System
which used a couple of lightweight missiles
One of the things that killed Hawker Beechcraft's chances in the June fly-offs was the AT-6's handling problem with an asymmetric weapons load ie about a 500lb streamline shape hanging off one wing.