The MR556 has quickly become my go to gun. I'm really can't say anything bad about it. Had no failures to feed and no failures to fire 2 date. It took a while to figure out what bullets it likes, but since then I've discovered it is capable of very very good accuracy. It can easily put 15 rounds inside 1 and 1 half inches at 100 yards. Right now I'm shooting 65 grain Sierra Gameking and 69 grain Sierra Matchking. I've installed an ACOG 4X compact optic, which seems to be a perfect match for this rifle. I Recently purchased a POF 308, and wish I'd bought the HK 762 instead. I'm going to sell the POS oops make that POF and look for a 762.