The answer is in your own link, "it's a S&W Performance Center 45 Colt 625-7.
It is no longer a current production piece, but if you search the world over you may find one like this
Could somebody possibly tell me what gun is in these pictures? Its made by Smith and Wesson and is a .45 I know that much but I haven't been able to find this gun anywhere else online. S&W Model 625 45 Colt Performance Center Range Review | Day At The Range Please let me know, and also if they might still sell these guns. Thank you
That gun is a one off specially made from a performance center for someone. The closest you will get is the S&W 629 which is an awesome gun, just not cheap. They have some for auction/buy on GUNSAMERICA. The 627 is sweet too if you want to drop down to the .357
I don't know if it was a one-off, but it was certainly a limited run. Might be tough to find now. Perhaps they will make another run.