The rails were introduced somewhere between the 2nd and 3rd generation models. You will find rails in both stainless and blue. The Taurus website isn't always up to date, so trust the products you see on the shelves, not on the site. Good luck finding what you are looking for. It's not unusual to find a mixture of 2nd generation guns with and without. All of the 3rd generation models I have actually seen have rails.