I am new in this game and right now mounting my first unit: a Hive Crone.
In the box it contains the pieces for mounting either a Harpy or a Hive Crone.
I already decided I want the Hive Crone, but while mounting it I realized that some parts of the Harpy are coolest - I like the head and the tail more, for example.
I tried to google this but I exactly don't even know how to formulate the question...
So here is my attempt.
Are there any rules regarding mounting a unit with other parts and attempting to play with it?
Would I be able to go to a tournament with my Hive Crone with the Harpy head (that is, without a gun in the tongue, for example)