Forgefiends are fused with enormous rotary cannons that fire fist-sized phosphor shells, or else with ancient artefact-ordnance perverted to vomit ectoplasma from the beasts’ own innards. With such weaponry they scythe down masses of enemy troops and blast glowing craters into the toughest opposition.

To make the weapons interchangeable, I replaced the plastic ball-joints with steel ball bearings.  Each weapon has a magnet inside the joint making them completely swappable and poseable.