Upgrading Aircraft Weapons

[Dili]

If an aircraft upgrades IRL from 2x12.7 to 4x12.7 will it work if i put 2x12.7 and 2x12.7(this one operative from 10/1943) ?

[JeffroK]

To clarify, you want to create an aircraft with 2 weapon types, one is only available from 10/43??

Shouldn't be a problem, especially if there is a mix of fuselage & wing mounted MG's.

However, what effect would doubling the gun and ammo weights do the the aircraft speed and maneuverability??
This would usually be covered by upgrading to e new aircraft model.

Your approach could be interesting with squadrons made up of a mixture of 2 gun & 4 gun aircraft!

[Dili]

Correct. Good point about the aircraft performance, it is indeed a problem for fighters, while not much for bombers if it is just 2 machine guns.

If the machine guns just start to work after a certain date i don't think a squadron can have a mixture of 2 and 4 gun aircraft. All planes will have 4 machine guns from that date on.