The spring does not have to be glued in place. If you remove the trigger the spring can be tricky to put back in place. Some remove the trigger spring but I like the tension the spring adds to the micro switch. I tried it once without the trigger spring and had way too much trigger bounce, to the point of full auto.
Insight - DM9 - Marq 6 - 2K5 Timmy - DM5 - 06 Ego - ETEK - Victus-
AutoCocker Pump - DP F7 - PMR - Luxe