Ok here is my answer: What gun is the "ancient Atlantean weapon that can shoot a bizarre tag that adheres to its target and is capable of shooting localized black holes?", (quote Andromeda.)
The dark star of course.
What type of armor is the destroyer armor?
Atlantean. ( yes I know its all alien stuff but lets just stick with atlantean ok??)
So I think its safe to say that the gun on the front cover is indeed the Dark star.
As for the trust soldiers in the background they have ARC Eclipses and the Conduit 1 has Ford with a TPC grenade launcher on the front..... --- "In reality, hope is the worst of all evils, because it prolongs man's torments." ~Friedrich Nietzsche Hope* FC: 4170-3637-3845