Tried to install the Apex trigger in the PPQ 9. For some reason my slide stop takes an insane amount of force to get out. When putting it back together I had everything lined up and couldn't push the slide stops together by hand. When i tried to bang it back together the slide stop on the right side of the pistol pushed through and broke the plastic. Wonder what Walther is going to say when i call them. Thats the end of my gunsmithing career.