Originally posted by Angus
So, want those gondies for AH?
Yep, sure. However the more I dig the more I find that many sources (like those in the first post of this thread) state the cannon pods for the K-4 as a "possible" Rustsatze.
The last source I found is a nice monography by R.Michulek (sp?):

from A.J.Press, Aircraft Monograph n.17.
Even tho the R/4 modification for the K-4 is clearly listed as possible, the author says that:
- after mid 1944 those 20mm Rustsatze were very seldom mounted even on late G models (late G-6, G-14 and G-10);
- the anti buff role was assigned more and more to the 190A's;
- the 20mm pods were difficult to mount. It was something generally done in the asssembly plants and not by ground crews.