TOTALLY WRONG.

piston ARs are very problematic and UNproven. look up CARRIER TILT + AR15 newbie. a piston AR will NEVER EVER have the reliability of an AK, period. I also remember reading (@ arfcom) about the HK416s having defects with cracking.

Quote Originally Posted by E46_Ace
Uhh, actually it can and is because now they make piston operation kits for the AR which makes it just as reliable, if not more reliable than an AK.