Glock upgrades

[wDoty]

Why would upgrading moving parts from plastic to medal make it less reliable?

If you upgrade your trigger, is that not making it less reliable?

Iv since installed these parts. Makes a noticeable difference.

I guess hand loads are not as good a factory loads…

Depends on what you’re changing out. Not everything is an upgrade. In my experience the vast majority of unreliable Glocks are also Glocks that have been “upgraded”.