My RRA AR15 has only had operator induced errors (failure to seat the magazine) in 3,000+ rounds.
I've shot a variety of AK's and two of them malfunctioned. One was in Vietnam at the Cu Chi Tunnels, and it was seriously abused, so I'm not to critical of the type for just that. The second one was my SAM7-SF. I decided to take it out with a semi-functioning safety and shoot it anyway and I had a jam with Red Army Standard Ammo. I know it's cheap ammo, but I've had no jams with my AR15, even with cheap ammo. And isn't being able to shoot with cheap ammo and under adverse conditions supposed to be the strong suit of an AK?