This was made in 1965 and is the Service Model with a 4 inch barrel and fixed sights. Essentially it is a striped down Model 57 , but oh so accurate. Both I and an instructor shot a plate rack and cleaned it at 35 yards with a standard sight picture. The .41 mag is almost equal to the .44 mag but has a lot less felt-recoil. I have several speed loaders and the usual Pachmayr grips that will go with this gun from me to you for $750.00.