Everything breaks James. The crazy thing is that the gun I ran, had the highest to second highest rounds through it by far and I only had a locking block pin shear, which never caused an issue with operation. I’ve had other glocks with pin shears and trigger spring breaks-the latter being most serious. The failures could only be traced to a bad part and not the gun as a whole.
Good suggestions Crow Bar! Col Cooper was one of the best.