Its easier then one would think to find an aspect of Glocks and their parts that show many variations. This is a thread attempting to discover just how many trigger bars there actually are in the early 9mm. We had another thread that went into some detail about trigger bar variations seen in the early handguns. I may or may not have found some more. That thread can be found here. https://www.glocktalk.com/threads/upgraded-pb-on-gb.1785436/ Here is the original thread that I screen shot images and edited them to fit in here.