I don't have a K9, but I do have a P9, which is considerably lighter. Recoil on the P9 is very manageable, and feels much lighter than on a .380 I used to have which was a bit smaller, but heavier.
For comparison, it is somewhere between that of my full-sized Ruger 9mm, and my compact 1911. Both of these guns are over 30oz, while the Kahr weighs in at more like 16.