BTW, the afore mentioned springs are a near identical replacement part. But, that's not to say other springs of a stronger compression won't work as good, sometimes even better that the originals. If you are having a problem with the plunger not pushing past the trigger lever, (the little click you hear when you slowly let the trigger go forward) you may opt for a stronger spring? You can also tell the strength of the spring by the loudness of the click when you let the trigger go forward as in testing the disconnector. It should be light and barely audible. But, it needs to be there... Anyway, now you know as much about it as I do, and that should be sufficient to get you into trouble from here on out!...
... you're welcome!
best, til....lat'r.....GT...