New trigger for Tonfon 3.6V 2000mAh Cordless Hot Glue Gun

Print the part on its side, with 100% infill and supports.

For the spring I didn't include a 3d printed holder because it was to small and weak. Instead there's a marking on the model where it should go, I took a 1mm metal wire heated it up inserted to the plastic and bent it a little.