I can tell a couple of things by looking at your pictures...1) It was definitely manufactured in 2018 (the 18 on the front, right hand side of the slide tells that story). 2) The barrel wear does not indicate any significant use (the oxide coating on the barrel will start to lighten significantly within about 100 rounds or so and that barrel looks about the same as both of mine did when new). CZ, in the past, was known adding a few extra tool marks on the slide interior, especially on the RAMIs, so it's really hard to tell based on the pictures if that's what that is . My verdict, assuming all serial numbers match, is that whatever wear you are seeing (aside from some obvious tool marks I see) came from the factory, during test shots fired. Of course, it's impossible to judge whether this gun has been mildly used based on what I'm seeing, but it most definitely has not been used hard for years. Hope that helps.