I have one with a 4 3/4 BBL. It locks up better then ANY SAA 3rd gen I have ever seen. Timed very well. People expected it to be as well finished as a $1200 SAA. When it was not they griped and did not buy them. I paid somewhere around 5 out the door for mine and am very happy with it, shoots right to POA with 250 grainers, excellent groups. The 5 1/2 is the most common, mine has the hard rubber grips while other had sorta cheap looking wood ones. They are not all that easy to find anymore as I have been looking for a reasonable priced 4 3/4 one to make a matched set for some time.