Hello guys,
I saw that there was some discution about the trigger mechanism, so I tried my own as well to share and give you guys some options. There are countless options for this, there is room inside, there is a hook on the trigger that is very practical to use, the trigger will stop on both direction against the plastic of the pistol when re-assembled, so any good spring will give a nice feeling, what I did is pretty simple and I'm very happy with the result, it really "clicks" when you press the trigger
I just used a rather stiff spring that I attached to the trigger hook on one side, and I put a screw into the plastic and aluminium tube that goes inside and wrapped the other end of the spring to it :
View attachment 1621290
and a short video of it working: