Heads up-extra planes on website list...

[Jazzy Jase]

Originally Posted by David603

Really? I thought it was common for K4s to be armed with the underwing 20mm gunpods.

Can't find a good source at the moment but there is a quote from wiki.

The 30mm cannon were extremely potent weapons, but they had a tendency to jam, and apparently all of the K-4s supplied to III./JG 26 were also equipped with 20mm-guns in the hated underwing tubs. Uffz. Georg Genth's regular aircraft was a G-10, but on occasion he flew a K-4. He preferred the G-10 as a dogfighter, as the K-4's bulky armament sharply reduced its manouevrability.

I take anything I read on Wikipedia with a pinch of salt. I've had a look through some of my books and still found no photographic evidence of underwing cannon equipped K-4's. Though I have found that the type officially existed as K4/R4 it does seem like it was a rare occurance.