As I said in my previous post, the test run by a national magazine didn't prove the piston guns as more reliable. In fact the only 2 guns to make it thru the test were GAS GUNS.
I think the reason people think the piston is more reliable is because the AK-47 will fire in ANY situation or condition. But, I think that has more to do with the loose tolerances of the K gun than the piston. I bet if you made an AK to the tight AR specs, it would prove to be no more reliable than a gas system, but it would be more accurate than the current versions.
