Whatever component is just not working…check out it all with inventory OEM parts. Sometimes aftermarket slides and triggers have too restricted tolerances to operate in a P80. Thus far the Brownells and Gray Ghost (slightly limited) have labored in my builds. I’ve heard ZEV slides could be far too restricted. https://mysterybookmarks.com/story18612140/helping-the-others-realize-the-advantages-of-glock-43-p80