I use Cura Slicer and I kept getting a not manifold error so this is a remix that you can use directly into Cura for printing.

Tip: The default support settings in Cura are a nightmare to remove, suggest using a support density of 7% and "use conical support" in Experimental tab.

Model is painted with Rustoleum paint+primer for plastics in matte black and dry brushed with Deco Art Extreme Sheen acrylic paint in Antique Bronze.