The problems listed here are pretty much bullshit ! I have ten of them, well eleven after the new deal go's through. The two we shoot all the time have between 2,500 and 3,500 through them with no jams, no mag failures, and nothing else listed here and there on the internet. The only issue I have had is 2 of the older mags feed lips on one side seperated while cleaning and had to be glued back with polymer bond. Those two mags have about 1,500 rounds through them since we "put them back together" and have yet to have another problem. I did notice on the one that the dust cover was starting to show a few dings ater 3,500 rounds so we helicopter taped it and haven't had any other issue's. Buy the gun it is fricking awesome to shoot, although be aware that this is NOT a 308 or a high caliber long range shooter it is a PDW and should not be expected to make thousand yard shots. It will how ever group 1 inch at 250 yards if your a skilled shooter and have good optics. Do yourself a favor though, if your going to buy just one, buy the tri-rail as it is more cost effective and gives a better sight picture with an eotech !