The other thread is full of broken picture links so I decided to start a new one here.   When planning a CZ Open build, there are a number of things to consider:   -comp type:  cone or bull, off the shelf or custom, aluminum, steel, or titanium.  With a bull style comp the barrel bushing remains and the comp us screwed onto a barrel at least 0.4" longer than the slide, with a cone comp, the bushing is removed and barrel lockup happens between the cone and slide.   -