Remove the grip panels. Using a strong pin, insert it into the hole on the hammer strut and cock the hammer. Remove the hammer spring/strut assembly. Take out the screws holding the gripframe on and carefully remove the gripframe (watch for a couple tiny springs). take note which screws go where. Swap out the trigger springs. Reassembly in in reverse order. be sure not to forget the small springs/plungers. You could also change the hammer spring as well. Just need to compress the factory hammer spring , remove the pin, and slowly release the spring, swap them and compress to replace the pin. Re-insert it back into the gripframe and after relacing the grips, you're done!