Later came the pusher variant...

After the sucessful D version, came the inevitable F version, constructed in large numbers in underground facilities.
In the previous E version the nightmare of propeller synchronization was finally dropped with the new, non intermeshing, pusher propellers, and the twin fuselage noses were occupied by more weapons.
This was the true destroyer version with up to 10 25mm automatic guns.
Thought as a transitional model, it was equipped with straight, somewhat crude, cruciform tail planes, but in the end, production numbers increased largely by the demand of his more devastating firepower.