I've been in the Taurus family over 20 years. I purchased a new Taurus PT-111 Millennium Pro G2 from a local retailer today. Upon returning home, I removed the slide from the frame to get familiar with breakdown. On my 1[SUP]st[/SUP] attempt at reassembly, I was unable to reattach the slide, as something was catching internally and stopping it appx. 2” from the rear of the frame. After several unsuccessful attempts, I removed the barrel and recoil spring assembly and tried again to reattach the slide with no success. I then placed a call to Taurus customer service to report the issue. We were unable to resolve, and it appeared to be a mechanical/functional failure. With the barrel still removed, I was able to use a soft pencil to depress the Firing Pin Block plunger and then the slide fully seated. This was the problem. The Firing Pin Block plunger was catching on the right side of the Central Support, not allowing the slide to fully reassemble. I was asked to return the factory new firearm for repair and advised it may take 3-4 weeks to repair and return. You can imagine my frustration at this point. Upon closer examination, it was clearly evident the amount of contact damage caused to the Firing Pin Block plunger and Central Support due to the factory defect (See photos). This is the first time I have experienced this level of poor quality in craftsmanship and function on a Taurus firearm. If you look closely, you will see the poor milling quality on the metal parts of this firearm. I have never seen so many rough edges and milling (or casting) on any firearm I've owned or serviced. I purchased this specific firearm due to its second strike capability, size, capacity, and positive reviews. I intended for it to replace my M&P Shield as a daily carry. I'm sharing in the event someone else experiences the same issue. I remain optimistic that Taurus will make proper repairs.