I picked up a police trade-in 4046 TSW this weekend. When I was cleaning it, I noticed a cutout in the barrel/chamber that none of my other Gen 3 pistols have. I assume it is a visual indicator of a loaded chamber, but I wanted to check here to see if that's what it really is. It took me by surprise as I've never seen that on any pistol I've ever had my hands on. I've got a brass cased round in the chamber and the rim can clearly be seen in the chamber.