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
Sgt. of Marines, 3rd Award Expert Rifle, 237/250
1st Award Expert Pistol, 382/400
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011