Whichever portion is not really Operating…attempt it all with stock OEM components. Occasionally aftermarket slides and triggers have way too tight tolerances to work inside of a P80. To date the Brownells and Grey Ghost (just a little limited) have worked in my builds. I’ve read ZEV slides may be https://bookmarkangaroo.com/story18747843/not-known-details-about-glock-43-p80