Thought this was relevant to the 'mag changes can be fast on a bullpup' debate.
Although I do concede that some speed reloads on conventional rifles can be faster, the Chinese soldiers in this video are pretty damn good at their reloads. I would daresay that this could beat out most other reloads done by similarly trained operators using conventional layout weapons.
The whole video is pretty cool and I suggest you watch it all but if you want to see the reloads, there are two starting at around 1:15 and 1:25.
Chinese Army Shooting Competition - YouTube