Unfortunately there is no information about the equipment used by all shooters in the 2016 FT worlds. The only thing I could find are the pictures that were published.
The 2016 World Champion was Jack Harris from Wales that used an Airarms EV2 with a Nikko Stirling Diamond 10-50×60 scope.
In second place in the PCP class was won by Sergey Zubenko from Russia with his Feinwerkbau P70 FT and Sightron SIII 10-50×60 scope.
Third place in the 2016 worlds was for Andrew Calpin from England. I could not find a picture of him in Portugal but he shoots an Airarms FTP900 in other pictures from 2016. The scope looks to be a Sightron.