Final version with additional variants. Added one more for fun.
think it turned out quite well. The 40 mm antimaterial gun can be removed to be used by crewmember leaving the vehicle. But in this case it is mounted on a remote controlled turret. The 30 mm tripple barrel variant is more traditional and carries suppressive fire which can be quite effective to support infantry or to move out quickly.
Tried to make them somewhat futuristic but had to use some guidelines to have them fit into the universe they are needed.
so traditional with future tech