First staff member looked bemused/suprised, and said "he's moving his finger", which we said wasn't the case as he couldn't shoot that fast even on a DC2.
2nd staff member [edit]didn't look at all[/edit] suprised, paused, then said "trigger filter is off".
Which it may well have been, but the marker was in some form of demo mode, so it was only cocking - not dropping the solenoid and firing gas. Which means that apart from cycling faster, it also has less kick = less bounce.
To be fair, at the end of the day a cocker will always bounce due to the reciprocating mass being so high, and the fact that it's a back forward movement, which pulls the gat back off your finger more than the kick from something like an angel/dm4 etc.