A ) Weapons that come with internal smartgun as factory equipment do not show the “smartgun” and “optical” slots. If an internal smartgun is added to a weapon later, those slots show up.
B ) When adding an external Smartgun to the weapon, it can be modified by using the "pen" symbol on the smartgun. When adding an internal Smartgun to the weapon, nothing happens at first. You have to leave the weapon menu and reopen it for two new windows popping up.
C) Also I propose to add a "pen" to also the Internal Smartgun, same as for the external.
A) This is very intuitive
B) This is same for internal and external
C) The new options for an optical slot and airburst are bound to the item which causes them
D) Needs less space as this does not eat up two of the visual slots. For example on the M23 the new "Sichtverbesserungen" menu hides the "Zubehörhalterung rechts" menu, which is a BUG.
Some improvement done:
Slots from internal smartgun now show up also for factory installed smartguns
Airburst moved to modification thus one less slot needed
Resorted slots so slots from smartgun no longer overlap others
(only overlapping slots are not WEAPON_SECURITY and SIDE_R)