3 inch
few 3 inch guns are out there..the 65 is in regular production in this length still and are some special edition 66's..and some very few 686 and 681 models...advantage over the 2 1/2inch is a full length ejection rod...and, for me, the weight and balance of the 3 inch is just remarkably comfortable in the hand without sacraficing much in size and concealment. I'd recommend anyone who gets a chance to work with a 3 inch S&W try it, they might find a new favorite for general duty use.