If you change the striker spring to a Glock 6#, & the recoil to a Glock 15# on a factory or after market guide rod, the trigger will be better, the slide will not try to open, & you won't spend $80 on a questionable guide rod. Box stock, the gun is WAY oversprung for minor production loads. At a minimum, I'd suggest these spring swaps. With nothing else done, I'm at 3# on the trigger, lock up is tight.