Bought the ZEV drop-in trigger for my Gen4 Glock 17. Installed it as instructed without changing anything on it and the trigger does not cycle normally. In order to take down, I have to remove the slide backplate to free up the internals for disassembly.
I had this problem with a Ghost trigger (didn't realize it needed fine tuning), but figured the drop-in ZEV should work just fine after dropping it in (without gunsmith mod).
Any thoughts?