For those of you that have both types of stamped receivers, can you see a real difference in accuracy between the regular 1mm receivers, and the 1.6 or 1.5mm chinese? While i'm on the subject, is there then a big difference between the milled, and the thicker stamped receivers? I ask this because I have viewed a slo-motion video of a ak firing, and there seemed to be a lot of receiver-flex.

I have (or have had) stamped 1mm receivers, stamped 1.6mm receivers, and milled receivers. Keep in mind that a "true" accuracy comparison is difficult, as many factors go into accuracy. You'd really have to compare a 1mm stamped AK to a 1.6mm or milled AK by the same manufacture.

But to my understanding, a thicker stamped receiver (i.e. 1.5mm or 1.6mm) is "supposed" to mimic the torsional ridgidity of a milled receiver. Less receiver flex.....hence the accuracy is "in theory" increased. However, any accuracy improvement would be extremely minimal. My best estimate would be maybe a 0.25" tighter group at 100 yds.

My Bulgarian 74 on a 1.6 shoots 5.5" ten shot groups at 200 yards with 7N6 and 4.0" five shot groups of Barnaul 60 grain lead core.

Thanks for the responses guys, anybody else with any first-hand experience?

Both my Yugo UF and my Yugo fixed stock have 1.6mm receivers and they hold up to my Bulgarian SLR-95 in accuracy. But these are the only stamped receiver AK's that ive personally shot that WILL hold up in accuracy with my milled SLR-95.

This is a 25ft. pistol target shot at a measured 50 meters with a Polytech AKS to sight it in. I find that my chinese rifles are the most accurate of the AKs I've owned