3.5lb Glock connector is installed in my Gen4 21 and...
It's still not a 1911! But, it feels much better:) I didn't polish anything or change any springs, just wiped off the parts, dropped in the new connector and put a drop of Militec1 on the metal to metal contact points and wiped off the excess. I don't know what the pull weight is now but I'm pretty happy with it. I might instal Wollf competition trigger and striker block springs in the future but haven't found a set as of yet.