Spent case ejection

[stugumby]

Greetings: i was just looking under my sturmovik and noticed near the cannon barrels 2 slots, one short and one long and no slots near the mg barrels. So my question is when firing im observing empty cases falling out but is the mg empty casing modelled or just the cannon? if the gun is belt fed the link would fall out the small slot? or is it the slot for the mg but ejection not modelled? Also noticed on the beaufighter and the hurricane field mod the slots and ports dont align. Definitely not show stoppers but im just curious. Some of the planes such as lagg have slots under the wings as well but all the guns are in the nose.