This is a trigger update for the tng. It will allow you to run more spring pressure on the firing pin. 

I had difficulties installing the new setup. I had to open up the trigger cutout all the way to the inside of the guard because I couldn't squeeze the trigger. It made installing the pins easier.

Print in pla+ or better. Sear is best ran on it's top, the long skinny flat edge. The trigger is best printed on its side, where the pin goes through. I used some m3 screws to hold the sear in the frame, and to the trigger itself. Just make sure to cut to exact length.