Sontaran connection in Mona Lisa's Revenge?

I think your going to like this. I was flicking through this weeks DWA, when I found this picture:

The picture is of Mona Lisa after she has come to life in 3.9 and 3.10. But on closer inspection, the gun that she is wielding is a Sontarans! Last seen being held by Commander Kaagh is series 2 (below).

I have looked all over the internet and I can't see anyone else that has realised this yet. Remember, you heard it here first! I was very lucky to notice it! If your going to re-post this information to your blog, please credit ours.

Here is a more detailed look at the blaster. Click on it to enlarge it and get a better view:

So what do you think? Coincidental or not? I do doubt that the Sontarans are in the episode, but this is a slight breakthrough.

Chandra.