When I build either the regular or heavy machinegun turret it randomly picks mk1, mk3 or mk5 versions. Placing a turret or reselecting it in the build menu changes the version. Mk5 is black and has incendiary rounds vs mk 1 and 3 which are beige and normal bullets.


Doesn't happen with any other type of turret.

I think only machine gun turrets HAVE multiple MK ranks, which is why they are the only ones that are "Random".