19 is a K frame?
M
good one i stand corrected!The only full underlug K frame that I know of is the 617 which is a .22LR.
There's also a model 14 with full underlug. Not a current model and also not very common but they are out there.
http://smith-wessonforum.com/s-w-revolvers-1980-present/137151-model-14-5-6-full-underlug.html

S&W has never made a K frame with a full underlug.
The L frame is bigger where needed but still has the same grip frame as the K. The difference between the K and L is noticeable, but not huge.

That would be the one one. Nice gun by the way!



























