This model was the original model for the .357 magnum revolver and it was produced in 1935 for the first time. It was a very popular model and many of its versions are still in production. The Model 27 revolver was built on the Carbon Steel of Smith and Wesson and it featured a large N-frame. It was adjustable at different times and had barrel lengths in the range of 3 ½”, 4”, 5”, 6”, and 8 3/8”. Apart from this, these revolvers also featured the option of adjusting sights.