The KRYTAC FN P90 features an adjustable trigger that allows you to tune the trigger length of travel.
The original trigger measurements is 6mm travel for semi-automatic, 9.5mm travel for automatic.
To adjust the trigger, you will need a 2.5mm allen key.
Adjusting the Trigger
Make sure that the magazine is removed and that there are no BBs in the hop-up unit or the barrel. Point your P90 in a safe direction at all times.
Locate the access hole in the rear of the thumbhole.
Insert your 2.5mm allen key into the screw located inside the access hole. Turn the screw counter-clockwise to decrease the trigger length of travel. We recommend turning in small increments and testing the trigger.
If you feel the adjustment start to bind (get tight), you will need to turn the screw clockwise a few turns and then again counter-clockwise.
Note that overadjustment will cause malfunctions with the trigger, including firing without the trigger being actively pressed to the rear.