Welcome to Librarium Online!
Does the kit come with any optional parts in case I want to make something other than the Ark Mechanicus? (I'm thinking Oberon myself; since it's much cheaper than the Emperor and seems to do about the same job)
Oberon is very viable in the AdMech fleet. AdMech needs less ordnance then a regular IN fleet.
And yes, the kit comes with enough bits to create all variants.
WARP RIFT - The Battlefleet Gothic Online Fanzine
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Thanks for the info! Yeah, I figured they'd need less ordnance, or at least launch bays to be more specific due to their increased turret value =)