GLOCK firing pin spring
Changing to a lighter spring makes the trigger pull lighter and actually makes the firing pin hit HARDER! Look at the exploded view of a GLOCK and you will see how it works. As for FTF's...happens every now and then. You should see how much we find in turn in brass and range brass we collect! A lot of times a second hit will set them off. If you have an FTF' first make sure the gun is pointed down range. Next, wait a bit and then unload the round or if you have second strike capability, whack it again and see if she goes. Notice I say wait a bit and not give a definite time.....depends how patient you are!
There are no accidents, there is only ignorance, mechanical failure, or "ACTS OF GOD"! I load 3000-5000 rounds a day, 6 days a week!