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Glock 17 double tap

My Zev kit (g19 gen 4) would fire on a trigger pull, then fire again on trigger reset. Close inspection showed the safety plunger spring had turned sideways in the hole it sits in. Once I corrected its orientation I never had another problem, I'm 750 rounds in on it now.
When that happened it had 0 rounds put through it, I was thoroughly dry testing the break and reset after it was installed.

Luckily it wasn't an issue when loading one in the chamber at home to carry it that day. I learned from that to dry test test test and test again after modifying anything. I did always wonder if there was a live round in it, would it have gone full funswitch due to it being broken.
 
I would replace the entire trigger assembly. Previous owner probably ground off too much of the engagement surfaces. It will cost about $20 with shipping to replace everything.
 
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