The future of the AR in America is unstable at best at the moment. If you already have a pistol I'd say sit tight.
Then again I may be kind of a hippocrite in saying that as I sold my ACR before the panic hit to a buddy at a bargain so that I could buy a Colt 1911 but that's only because I had four long guns and no pistol.
I'd say it depends on your firearms needs, if you don't have a handgun and intend to carry the HundK then it's, IMHO, a not a bad decision. Just be comfortable with the fact that it may prove extremely difficult to replace that AR.
Edit- panic not mapic
LCpl Williams, Evan T. USMC-R, 02-08-2010 ~
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011
REV. 19:11 And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.