The only thing I designed was the adapter that fits inside the original “barrels.stl” file from David Warboss' “Cyberpunk 2020 i3 MK3S+” build.
Superglue the adapter into the minigun, then superglue an 8mm x 3mm round magnet to the bottom of the adapter. WIPE EXCESS SUPERGLUE AND LET DRY BEFORE YOU STICK IT IN YOUR EXTRUDER!
My Print Settings:
The author remixed this model.