Forum:HRUNTING/YGGDRASIL Grenade Launcher?

It appears that the HRUNTING/YGGDRASIL Mark I Prototype Armor Defense System has a possible Automatic Grenade Launcher above the Gatling Gun, which is apparent in the concept art(Its also labeled as '40mm' but nothing more). I was wondering what to do about this, and if it is Canon or not. On a side note, I'm new here, so if I have done something wrong, please let me know. -FailAwesome