He seemed to know what he was doing but shame there was no number two to ensure belt was being fed correctly. Also rather than having to go through drills to replace spent belt his number two could have fixed fresh belt whilst firing.
Why the f*ck didn't the guy filming him help him out? Cnut! Deffo jams caused by twisting belt - too much fiddling with gas adjuster. If you stood up in a window under fire, fcuking about with a gimpy, how long would you last before being picked off! GRRR