The truth factor associated with that episode was a little shaky, in my opinion. They never actually said that they took a 1,000 yard shot. The long range shot was of an indeterminate distance, thru auto glass, to hit a target. The other part was the questionable use of the 7.62x39 round at long range. Have you looked into the trajectory of 7.62x39 at 1,000 yards? Think slow-pitch softball, or maybe a mortar round. If you mis-judge the range by just a few feet, you will have missed a human-sized target completely. Can you make an AK action lock up well enough for a 1,000 yd shot? Maybe, but you'd better re-chamber it for .308 Rem or .338 Lapua.
Gimmick. Like the triamese AR rig or the water-cooled double M-16 that they got some Navy reservists to prostitute themselves over. I know - Simply doing your job well doesn't sell TV time. But, Hollywood doesn't actually get the job done.
For AK's, check out Red Jacket Firearms, Inc and watch this Sons of Guns - First 1,000-Yard AK.