The Mechanicum Combat Force features a squad of six agile Thallax Cohort models armed with lightning guns, with options to equip two with phased plasma-fusils, photon thrusters, or multi-meltas. This formidable firepower is bolstered by two Castellax Battle-automata, each customizable with shock chargers or power blades and a selection of shoulder-mounted weapons—including two mauler bolt cannons, one darkfire cannon, and one multi-melta. Completing the force is the imposing Thanatar Cavas Siege-automata, a mobile artillery platform armed with a powerful Hellex-pattern plasma mortar.

The set contains two Mechanicum Macro-construct transfer sheets, each with 394 transfers, along with two Mechanicum Constructs transfer sheets, each featuring 558 transfers.