My modded TM T16000m DIY
2 stage trigger, pointy finger switch and pinky finger swich added first.
Later on I added 1 5 way switch on the thumb rest, 1 5 way switch on the top and replaced the 2 sidebuttons with tactile switches. Finished June 2017.
Added better tops for the 5 way switches 14/1 2020
All the buttons on the base still works.
I would strongly recommend to collect the needed parts first,plan ahead, drill all holes before any assembly.
I would also very strongly recommend to have longer wire ends in the handle than I had.
Some of them where close to claustrofobic to work with.