I bought some rare earth magnets from Radio Shack (smallest they have) and removed my trigger return spring. I then epoxied the 2 magnets to the trigger fram where the spring sat and 2 magnets to the trigger (where the spring would hit)
magnets are stacked in both cases and obiosly set to repel each other.
The finished result is almost effortles trigger pull. (less than half force needed for stock setup.) The trigger also bounces back into position very fast.
This is my secondary gun so I like to experiment on it. not sure how many other mechanical fishy users there are but it is worth the couple bucks in magnets.
I orignially bought the magnets to mod my A5 trigger, but didn't want to cut the trigger. The pirahna however was already setup. I can just cut the magnets off and put the spring back in and its back to stock.