I would like one question,why is not included in this part of the E4 Messer?

[Sven]

Originally Posted by csThor

A cannon between the cylinder hubs of an Emil is plain and utter bullsh*t! The Emil did have its main oil tank where the breech of such a weapon would have been so there is no technical possibility of an ordinary Emil having a centerline weapon. This is a fairy tale from the earliest days of research on the Bf 109 and continues to live on through lazy authors who copy from earlier works rather than research details on their own. There may have been one or two pre-series prototypes being tested with a centerline MG FF, but I'm rather sceptical about this. These "Bf 109 E-2" sound too much like one of these urban myths ...

Thank you for your clear answer!