Blackhawk convertable
Fine guns, I have two, both in .45 Colt/.45 ACP. Mine have the 7.5in barrel, and one is the most accurate revolver I own.
The .357/9mm is on my want list, but hasen't got to the top yet. Ruger's are tanks, way overbuilt, and so they will last about forever. The only gripes I ever hear is that they are not identical to the Colt SAA (they are larger and have adjustable sights), and that the actions are not as smooth, or the trigger pull is not the best. There are a few simple things that can be done that make a tremendous difference in the smoothness of the action and the trigger pull, so that is not any big deal.
They are one of the best values for the money of any guns on the market today, at least in my opinion. An added plus is that with the transfer bar ignition system, you can safely carry 6 rounds in the gun, which is something you cannot do with the Colt SAA or copies. New Model Blackhawks do not operate in exactly the same manner as the Colt SAA, there is no half cock position for the hammer, simply opening the loading gate frees up the cylinder for loading and unloading.
Be aware that there are "old model" Blackhawks out there. They are also called "3 screw" models. These DO operate just like the Colt SAA, and cannot be safely carried with 6 rounds, only 5, with the empty chamber under the hammer. Ruger made the change about 1973 (as the result of a lawsuit), and the older guns are collected by some people. You can tell the difference at a glance, by looking at the side of the frame below the hammer. If there are screw heads, it is an old model, if they are round pins, it is a new model (or an old model that has been factory updated to new model specs). Ruger does the conversion to new model specs free, and will do it to any old model you send them, whether you want them to or not.
They are fine guns, and are alot of fun to shoot. You might look around for a used one, as they are often just as good, and a bit cheaper.