ask the armoured guys how many stoppages were attributed to the new gas reg's, very few as compared to the adjustable ones (they were very few to begin with). as for the Americans using the C6 its the smartest thing they have done. we now have a NATO standard for a GPMG in the western countrys. the US has addopted these on their helicopters, tanks , humvees, larger trucks etc you name it and it will probelly have a mounting for a C6. the nice thing the US did was introduce a shorter butt and barrell for the weapon, for MOUT operations. they also put a sight with some night vision capabilitys on it, along with rails to mount lights, laser pointers and all their other equipment which one uses today for fighting.